NSR Query Results
Output year order : Descending NSR database version of March 21, 2024. Search: Author = J.P.Draayer Found 218 matches. Showing 1 to 100. [Next]2024PA10 Phys.Lett. B 848, 138340 (2024) F.Pan, Y.Zhang, L.Dai, J.P.Draayer, D.Kekejian A multi-shell extension of the interacting boson model NUCLEAR STRUCTURE 152Sm; calculated strength distributions, energy levels, J, π, B(Eλ), electric quadrupole moments with a multi-shell extension of the IBM for even-even nuclei that includes multiple excitations. Comparison with available data.
doi: 10.1016/j.physletb.2023.138340
2023HE12 Phys.Rev. C 108, 024304 (2023) N.D.Heller, G.H.Sargsyan, K.D.Launey, C.W.Johnson, T.Dytrych, J.P.Draayer New insights into backbending in the symmetry-adapted shell-model framework NUCLEAR STRUCTURE 48Cr, 20Ne; calculated levels, J, π, backbending, excitation energy vs angular momentum for rotational bands, yrast bands structure, moments of inertia. Symmetry-adapted no-core shell model (SA-NCSM) with the NNLO chiral potential and symmetry-adapted shell model (SA-SM) with the GXPF1 interaction. Comparison to experimental values.
doi: 10.1103/PhysRevC.108.024304
2023PA33 Nucl.Phys. A1040, 122746 (2023) Wigner coefficients of U(4) SUS(2) (X) SUT(2)
doi: 10.1016/j.nuclphysa.2023.122746
2023SA50 Phys.Rev. C 108, 054303 (2023) G.H.Sargsyan, K.D.Launey, R.M.Shaffer, S.T.Marley, N.Dudeck, A.Mercenne, T.Dytrych, J.P.Draayer Ab initio single-neutron spectroscopic overlaps in lithium isotopes
doi: 10.1103/PhysRevC.108.054303
2022HE08 Phys.Rev. C 105, 044332 (2022) B.C.He, S.Y.Zhang, L.Li, Y.A.Luo, Y.Zhang, F.Pan, J.P.Draayer Even-even Nd isotopes in an SD-pair shell model NUCLEAR STRUCTURE 144,146,148,150,152,154,156Nd; calculated levels, J, π, B(E2). Nucleon pair shell model truncated to SD collective pair subspace (SDPSM). Comparison to experimental data.
doi: 10.1103/PhysRevC.105.044332
2022KE02 Phys.Rev. C 106, 014304 (2022) D.Kekejian, J.P.Draayer, V.I.Mokeev, C.D.Roberts Symplectic effective field theory for nuclear structure studies NUCLEAR STRUCTURE 20,22Ne, 22Mg; calculated levels, J, π, B(E2), and matter rms radii using symplectic effective field theory, starting from a simple extension of the harmonic-oscillator Lagrangian. Comparison with experimental values.
doi: 10.1103/PhysRevC.106.014304
2022LI12 Int.J.Mod.Phys. E31, 2250014 (2022) Z.W.Li, B.C.He, L.Li, Y.A.Luo, L.N.Bao, F.Pan, J.P.Draayer Nucleon-pair shell model: Effect of non-collective pairs for odd 123-129Sn NUCLEAR STRUCTURE 123,124,125,126,127,128,129Sn; calculated energy levels, J, π, relative angular momenta, B(E2) within the framework of nucleon-pair shell model (NPSM).
doi: 10.1142/S0218301322500148
2022LI33 Nucl.Phys. A1024, 122476 (2022) B.Li, F.Pan, X.-X.Ding, J.P.Draayer Transitional patterns in the spherical mean-field plus quadrupole-quadrupole and pairing model within two-j shells
doi: 10.1016/j.nuclphysa.2022.122476
2022MO10 Phys.Rev. C 105, 034306 (2022) O.M.Molchanov, K.D.Launey, A.Mercenne, G.H.Sargsyan, T.Dytrych, J.P.Draayer Machine learning approach to pattern recognition in nuclear dynamics from the ab initio symmetry-adapted no-core shell model NUCLEAR STRUCTURE 4He, 16O, 20Ne, 24Si, 20,22,24,26,28,30,32,34,36,38,40,42Mg, 166,168Er, 236U; calculated probability amplitudes of dominant configurations for ground states, shape coexistence and structure patterns using machine learning on ab initio symmetry-adapted no-core shell model calculations. Neural networks with training sets that include only the s- and p-shell nuclei.
doi: 10.1103/PhysRevC.105.034306
2022SA23 Phys.Rev.Lett. 128, 202503 (2022) G.H.Sargsyan, K.D.Launey, M.T.Burkey, A.T.Gallant, N.D.Scielzo, G.Savard, A.Mercenne, T.Dytrych, D.Langr, L.Varriano, B.Longfellow, T.Y.Hirsh, J.P.Draayer Impact of Clustering on the 8Li β Decay and Recoil Form Factors RADIOACTIVITY 8Li(β-), 8Be(2α); analyzed available data; calculated 8Be low-lying 0+ states, unprecedented constraints on recoil corrections, strong correlation between them and the 8Li ground state quadrupole moment using large-scale ab initio calculations.
doi: 10.1103/PhysRevLett.128.202503
2022XU02 Phys.Rev. C 105, 014304 (2022) H.T.Xue, X.R.Zhou, S.Y.Zhang, B.C.He, Y.A.Luo, L.Li, F.Pan, J.P.Draayer Neutrinoless double-β decay in the nucleon-pair shell model RADIOACTIVITY 130Te, 134,136Xe(2β-); calculated nuclear matrix elements (NMEs) of g.s. to g.s. neutrinoless double-β decay (0νββ) in the nucleon pair shell-model framework, with surface-δ approximation (SDI) and the BCS approximation. Comparison with shell model (SM), quasiparticle random-phase approximation (QRPA), and IBM2 theoretical calculations. NUCLEAR STRUCTURE 130,134,136Xe, 130Te, 134,136Ba; calculated low-lying positive-parity levels p to 10+ using shell model in the surface-δ approximation (SD)-pair or the SDG-pair subspace. Comparison with experimental data taken from the ENSDF database at NNDC, BNL.
doi: 10.1103/PhysRevC.105.014304
2021DO07 J.Phys.(London) G48, 045103 (2021) W.-T.Dong, Y.Zhang, B.-C.He, F.Pan, Y.-A.Luo, J.P.Draayer, S.Karampagia Statistical analysis of the excited-state quantum phase transitions in the interacting boson model
doi: 10.1088/1361-6471/abdd8c
2021JA06 Phys.Rev. C 103, 024317 (2021) A.Jalili Majarshin, Y.-A.Luo, F.Pan, H.T.Fortune, J.P.Draayer Nuclear structure and band mixing in 194Pt NUCLEAR STRUCTURE 194Pt; calculated levels, J, π, B(E2), potential-energy surface in (β, γ) plane, E2 strengths and transition matrix elements; deduced that slightly more collective of the lower basis-state band than that of the excited-state band. Transitional Hamiltonian of the interacting boson model with two-particle and two-hole configuration mixing, with the addition of configuration mixing Hamiltonian in pairing model.
doi: 10.1103/PhysRevC.103.024317
2021JA07 Chin.Phys.C 45, 024103 (2021) A.Jalili Majarshin, Y.-A.Luo, F.Pan, J.P.Draayer Band mixing in 96, 98Mo isotopes NUCLEAR STRUCTURE 96,98Mo; calculated energy spectra, J, π, B(E2), mixing amplitudes and mixing potentials. Coexistence mixing configuration (CMC).
doi: 10.1088/1674-1137/abcc59
2021MA53 Phys.Rev. C 104, 024332 (2021) A.J.Majarshin, Y.-A.Luo, F.Pan, H.Sabri, M.Rezaei, J.P.Draayer Properties of giant dipole resonances within an extended pairing model with a focus on spectral statistics NUCLEAR STRUCTURE 32S, 40Ca, 52Cr, 56Fe, 58,60Ni, 70,72,74,76Ge, 76Se, 86Kr, 88Sr, 90Zr, 116,124Sn; analyzed experimental spectral and statistical features of negative- and positive-parity dipole states using random matrix theory (RMT) and Berry-Robnik distribution (BRD) methodologies; calculated Poisson distributions and integrands for Giant-dipole resonances for the nearest-neighbor spacing distribution (NNSD). Calculations based on spd-interacting boson model (IBA), with the pairing correlations from solutions of the Bethe ansatz equation.
doi: 10.1103/PhysRevC.104.024332
2021MA84 J.Phys.(London) G48, 125107 (2021) A.J.Majarshin, Y.-A.Luo, F.Pan, H.T.Fortune, Y.Zhang, J.P.Draayer Quantum phase transitions and band mixing in 135Ba NUCLEAR STRUCTURE 134,135Ba; calculated variation of some excitation energy levels, energy differences and ratios in odd systems, B(E2), energy spectra. Comparison with available data.
doi: 10.1088/1361-6471/ac2fb1
2021PA28 Eur.Phys.J. A 57, 218 (2021) F.Pan, Y.He, A.Li, Y.Wang, Y.Wu, J.P.Draayer Extended Heine-Stieltjes polynomials related to the isovector pairing model
doi: 10.1140/epja/s10050-021-00535-3
2021SA18 Phys.Rev. C 103, 044305 (2021) G.H.Sargsyan, K.D.Launey, R.B.Baker, T.Dytrych, J.P.Draayer SU(3)-guided realistic nucleon-nucleon interactions for large-scale calculations NUCLEAR STRUCTURE 12C; calculated excitation energies of the first 2+ and 4+ states, rms radius of the ground state, B(E2) for the first 2+ state, probability amplitudes for configurations that make up the ground state, energies of the proton-neutron system for the positive-parity lowest-lying states up to 5+. SU(3)-coupled or Sp(3, R)-coupled ab initio symmetry-adapted no-core shell model (SA-NCSM) calculation with realistic NN interactions. Comparison with experimental values.
doi: 10.1103/PhysRevC.103.044305
2020DR03 Phys.Rev. C 102, 044608 (2020) A.C.Dreyfuss, K.D.Launey, J.E.Escher, G.H.Sargsyan, R.B.Baker, T.Dytrych, J.P.Draayer Clustering and α-capture reaction rate from ab initio symmetry-adapted descriptions of 20Ne NUCLEAR REACTIONS 16O(α, γ)20Ne, E(cm)=1.33 MeV; calculated bound state wave functions and spectroscopic amplitudes for resonances, α partial widths, asymptotic normalization coefficient (ANC) for 20Ne g.s., astrophysical reaction rates at temperatures of 1-10 GK. Calculations of overlap between the 16O+α cluster configuration and states in 20Ne using the ab initio symmetry-adapted no-core shell model (SA-NCSM). Comparison with experimental data.
doi: 10.1103/PhysRevC.102.044608
2020DY01 Phys.Rev.Lett. 124, 042501 (2020) T.Dytrych, K.D.Launey, J.P.Draayer, D.J.Rowe, J.L.Wood, G.Rosensteel, C.Bahri, D.Langr, R.B.Baker Physics of Nuclei: Key Role of an Emergent Symmetry NUCLEAR STRUCTURE 6Li, 8He, 20Ne; calculated excitation energies of the ground-state rotational band using first-principles of nuclear structure that the special nature of the strong nuclear force determines highly regular patterns unrecognized in nuclei that can be tied to an emergent approximate sy mmetry.
doi: 10.1103/PhysRevLett.124.042501
2020HE01 Phys.Rev. C 101, 014324 (2020) B.C.He, H.T.Xue, L.Li, Y.A.Luo, Y.Zhang, F.Pan, J.P.Draayer Noncollective nucleon pairs in even-even 124-128Sn NUCLEAR STRUCTURE 124,126,128Sn; calculated positive-parity yrast levels up to 20+, Eγ versus spin, level energy versus spin, and E-GOS versus spin distributions, B(E2) ratios, number of noncollective pairs as function of spin. Collective S- and D-pair shell model (SDPSM) calculations. Comparison with experimental data.
doi: 10.1103/PhysRevC.101.014324
2020HE20 Phys.Rev. C 102, 024304 (2020) B.C.He, L.Li, Y.A.Luo, Y.Zhang, F.Pan, J.P.Draayer Nucleon pair shell model in M scheme NUCLEAR STRUCTURE 150Nd; calculated levels, J, π, B(E2) using nucleon pair shell model (NPSM) cast into M scheme for the cases with isospin symmetry and without isospin symmetry, with the odd system and even system treated on the same footing. Comparison with experimental data.
doi: 10.1103/PhysRevC.102.024304
2020HE29 Int.J.Mod.Phys. E29, 2050088 (2020) B.C.He, Y.Zhang, L.Li, Y.A.Luo, F.Pan, J.P.Draayer SD-pair shell model: Vibrational and rotational limits in the interacting boson-fermion model for like-nucleon system
doi: 10.1142/S0218301320500883
2020LA13 Eur.Phys.J. Special Topics 229, 2429 (2020) K.D.Launey, T.Dytrych, G.H.Sargsyan, R.B.Baker, J.P.Draayer Emergent symplectic symmetry in atomic nuclei; Ab initio symmetry-adapted no-core shell model NUCLEAR STRUCTURE 20Ne, 12C; calculated B(E2), deformation parameters, level energies. Comparison with available data.
doi: 10.1140/epjst/e2020-000178-3
2020LI22 Int.J.Mod.Phys. E29, 2050039 (2020) B.Li, F.Pan, X.-X.Ding, J.P.Draayer Quantum phase crossover in the spherical mean-field plus quadrupole-quadrupole and pairing model with two j-orbits NUCLEAR STRUCTURE 103,104,105,106,107,108,109,110Sn; calculated level energies, J, π, B(Eλ) ratios; deduced parameters.
doi: 10.1142/S0218301320500391
2020PA13 Eur.Phys.J. A 56, 78 (2020) F.Pan, D.Li, S.Cui, Y.Zhang, Z.Feng, J.P.Draayer Exact solution of spherical mean-field plus multi-pair interaction model with two non-degenerate j-orbits
doi: 10.1140/epja/s10050-020-00084-1
2020PA38 Phys.Rev. C 102, 044306 (2020) F.Pan, Y.He, Y.Wu, Y.Wang, K.D.Launey, J.P.Draayer Neutron-proton pairing correction in the extended isovector and isoscalar pairing model NUCLEAR STRUCTURE 18,20,22O, 18,20F, 18,20,22,24Ne, 20,22,24Na, 20,22,24,26Mg, 22,24,26,28Si, 24,26Al; calculated binding energies, energies of 0+ states with isospin T=1-3, isovector np, nn, and pp pairing contributions to the binding energies. Extended isovector and isoscalar pairing model. Comparison with experimental values.
doi: 10.1103/PhysRevC.102.044306
2020PA42 Eur.Phys.J. Special Topics 229, 2497 (2020) F.Pan, X.Guan, L.-R.Dai, Y.Zhang, J.P.Draayer Exact solutions of mean-field plus various pairing interactions and shape phase transitions in nuclei NUCLEAR STRUCTURE 58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77Ni, 157,158,159,160,161,162,163,164,165,166,167,168,169,170,171Er, 159,160,161,162,163,164,165,166,167,168,169,170,171,172,173,174Yb, 223,224,225,226,227,228,229,230,231,232,233,234,235Th, 226,227,228,229,230,231,232,233,234,235,236,237,238,239U; calculated pairing gap, binding energies. Comparison with available data.
doi: 10.1140/epjst/e2020-000014-5
2020SO04 Eur.Phys.J. A 56, 29 (2020) H.Sobhani, H.Hassanabadi, D.Bonatsos, F.Pan, S.Cui, Z.Feng, J.P.Draayer Analytical study of the γ-unstable Bohr Hamiltonian with quasi-exactly solvable decatic potential
doi: 10.1140/epja/s10050-020-00048-5
2020SO17 Nucl.Phys. A1002, 121956 (2020) H.Sobhani, H.Hassanabadi, D.Bonatsos, F.Pan, J.P.Draayer γ-Unstable Bohr Hamiltonian with sextic potential for odd-A nuclei NUCLEAR STRUCTURE 187,189,191,193,195Ir; analyzed available data; calculated energy ratios, B(E2) using the collective model of the γ-unstable Bohr Hamiltonian with the quasi exactly solvable sextic potential.
doi: 10.1016/j.nuclphysa.2020.121956
2019GU10 Nucl.Phys. A986, 86 (2019) X.Guan, H.Zhao, F.Pan, J.P.Draayer Ground-state shape evolution in Er and Yb isotopes NUCLEAR STRUCTURE 154,155,156,157,158,159,160,161,162,163Er, 156,157,158,159,160,161,162,163,164,165Yb; calculated, extracted deformation parameters using published experimental data, neutron/proton pairing interaction strength from binding energies and odd-even mass differences, energy ratio; deduced that the gs shape (phase) evolution is mainly due to pairing interaction and less by quadrupole deformation. Axially deformed Nilsson mean-field plus extended pairing model.
doi: 10.1016/j.nuclphysa.2019.03.012
2019HE14 Eur.Phys.J. A 55, 143 (2019) B.-C.He, S.-Y.Zhang, Y.Zhang, Y.-A.Luo, F.Pan, J.P.Draayer Understanding nuclear dynamics in the SD-pair shell model: From pre-vibration to collective rotation
doi: 10.1140/epja/i2019-12835-x
2019JA02 Ann.Phys.(New York) 407, 250 (2019) A.Jalili Majarshin, F.Pan, H.Sabri, J.P.Draayer Systematic analysis on spectral statistics of odd-A nuclei NUCLEAR STRUCTURE A=71-221; analyzed available data; deduced a mass number-dependence in the level statistics for given spin and parity.
doi: 10.1016/j.aop.2019.05.002
2019MI22 Phys.Rev. C 100, 064310 (2019) M.E.Miora, K.D.Launey, D.Kekejian, F.Pan, J.P.Draayer Exact isovector pairing in a shell-model framework: Role of proton-neutron correlations in isobaric analog states NUCLEAR STRUCTURE 10He, 10,12Be, 10,12B, 10,12,14C, 12,14N, 12,14,18,20,22O, 18,20F, 18,20,22Ne, 22Na, 20,22Mg, 22,34Si, 34,36S, 34Cl, 34,38Ar, 36,38K, 34,36,38,42,44,46Ca, 42,44Sc, 36,42,44,46,50Ti, 46,50V, 44,46,50,52Cr, 50,52Mn, 46,50,52,54Fe, 54,58Co, 50,52,54,58,60,62Ni, 58,60,62Zn, 62Ga, 60,62Ge; calculated energies of 0+, T=0-3 states, binding energies and lowest isobaric analog 0+, T=0-3 excited states, staggering amplitudes for the total energy, total isovector pairing gaps. Shell-model Hamiltonian giving exact solutions for the lowest isobaric analog 0+, T=0-3 states using 16O, 40Ca and 56Ni as core nuclei. Comparison with experimental data. Discussed proton-neutron pairing correlations in nuclei, of relevance for waiting-point nuclei for the rp nucleosynthesis.
doi: 10.1103/PhysRevC.100.064310
2019PA15 Nucl.Phys. A984, 68 (2019) F.Pan, S.Yuan, Y.He, Y.Zhang, S.Yang, J.P.Draayer An exact solution of spherical mean-field plus orbit-dependent non-separable pairing model with two non-degenerate j-orbits
doi: 10.1016/j.nuclphysa.2019.01.005
2019PA38 Chin.Phys.C 43, 074106 (2019) F.Pan, D.Zhou, S.Yang, G.Sargsyan, Y.He, K.D.Launey, J.P.Draayer A close look at the competition of isovector and isoscalar pairing in A=18 and 20 even-even N ≈ Z nuclei NUCLEAR STRUCTURE 18,20O, 18,20F, 18,20Ne, 20Na; calculated energy levels, J, π using using the mean-field plus dynamic QQ, pairing and particle-hole interaction model.
doi: 10.1088/1674-1137/43/7/074106
2018PA12 Phys.Rev. C 97, 034316 (2018) F.Pan, D.Li, G.Cheng, Z.Qiao, J.Bai, J.P.Draayer Exactly solvable configuration mixing scheme in the vibrational limit of the interacting boson model NUCLEAR STRUCTURE 108,110Cd; calculated low-lying low-spin levels, J, π, B(E2) ratios relative to B(E2) for the first 2+ states using intruder configuration mixing scheme in the U(5) (vibrational) limit of the interacting boson model. Comparison with experimental data.
doi: 10.1103/PhysRevC.97.034316
2018PA13 Phys.Rev. C 97, 034326 (2018) F.Pan, S.Yuan, Z.Qiao, J.Bai, Y.Zhang, J.P.Draayer γ-soft rotor with configuration mixing in the O(6) limit of the interacting boson model NUCLEAR STRUCTURE 194Pt; calculated levels, J, π, B(E2), quadrupole moments using O(6), γ-unstable limit of the interacting boson model (IBM). Comparison with experimental data.
doi: 10.1103/PhysRevC.97.034326
2018PA18 Nucl.Phys. A974, 86 (2018) F.Pan, X.Ding, K.D.Launey, J.P.DraayerJ.P.Draayer A simple procedure for construction of the orthonormal basis vectors of irreducible representations of O(5) in the OT(3) (X) ON (2) basis
doi: 10.1016/j.nuclphysa.2018.03.011
2017DA01 Nucl.Phys. A957, 51 (2017) An exact solution of spherical mean-field plus a special separable pairing model
doi: 10.1016/j.nuclphysa.2016.08.001
2017DA12 Chin.Phys.C 41, 074103 (2017) A nucleon-pair and boson coexistent description of nuclei NUCLEAR STRUCTURE 102,106,110,114,118,122,126,130Sn; calculated energy levels, B(E2). Comparison with available data.
doi: 10.1088/1674-1137/41/7/074103
2017DR03 Phys.Rev. C 95, 044312 (2017) A.C.Dreyfuss, K.D.Launey, T.Dytrych, J.P.Draayer, R.B.Baker, C.M.Deibel, C.Bahri Understanding emergent collectivity and clustering in nuclei from a symmetry-based no-core shell-model perspective NUCLEAR STRUCTURE 12C; calculated levels, J, π, basis states, probability distribution for excitations of lowest 0+ and 4+ states, B(E2), M(E0), Hoyle state. 12C, 16,20O, 20,22Mg, 20,22Ne; calculated energies and B(E2) of first excited 0+ state, EGMR, and the lowest excited 2+ state. Symmetry-based no-core symplectic shell model (NCSpM) calculations for ground-state rotational band, the Hoyle state, and its 2+ and 4+ excitations, and the giant monopole 0+ resonance. Comparison with experimental data.
doi: 10.1103/PhysRevC.95.044312
2017PA04 Phys.Rev. C 95, 034308 (2017) F.Pan, D.Zhou, L.Dai, J.P.Draayer Exact solution of the mean-field plus separable pairing model reexamined
doi: 10.1103/PhysRevC.95.034308
2017ZH35 Phys.Rev. C 96, 034323 (2017) Y.Zhang, F.Pan, Y.-X.Liu, Y.-A.Luo, J.P.Draayer γ-rigid solution of the Bohr Hamiltonian for the critical point description of the spherical to γ-rigidly deformed shape phase transition NUCLEAR STRUCTURE 158Er; calculated positive-parity levels, J, ground, β and γ bands, B(E2) and level-energy ratios using T(4) model involving γ-rigid solution of the Bohr Hamiltonian with the β-soft potential. Comparison with theoretical calculations using the IBM, and with experimental data. New T(4) model as a link between the E(5) and the X(5) critical-point symmetries (CPS).
doi: 10.1103/PhysRevC.96.034323
2016GU12 Phys.Rev. C 94, 024309 (2016) X.Guan, H.Xu, Y.Zhang, F.Pan, J.P.Draayer Ground state phase transition in the Nilsson mean-field plus standard pairing model NUCLEAR STRUCTURE 144,145,146,147,148,149,150,151,152,153,154,155Nd, 146,147,148,149,150,151,152,153,154,155,156,157Sm, 148,149,150,151,152,153,154,155,156,157,158,159Gd; calculated Pairing interaction strength G, odd-even mass differences, odd-even differences of S(2n) values, odd-even differences of α-, and β--decay energies. Nilsson mean-field plus standard pairing model for the ground state phase transitions. Comparison with experimental values taken from NNDC databases.
doi: 10.1103/PhysRevC.94.024309
2016LA15 Prog.Part.Nucl.Phys. 89, 101 (2016) K.D.Launey, T.Dytrych, J.P.Draayer Symmetry-guided large-scale shell-model theory
doi: 10.1016/j.ppnp.2016.02.001
2016LI21 Phys.Rev. C 93, 044312 (2016) Quantum phase transition in the spherical mean-field plus quadrupole-quadrupole and pairing model in a single-j shell NUCLEAR STRUCTURE 212Rn, 214Ra, 213Fr, 215Ac; calculated levels, J, π, yrast bands, B(E2), electric quadrupole moments, energy and B(E2) ratios within the yrast bands using quantum-phase-transitional spherical shell-model mean field plus the geometric quadrupole-quadrupole and standard pairing model within a single-j shell. Comparison with experimental data.
doi: 10.1103/PhysRevC.93.044312
2016PA05 Nucl.Phys. A947, 234 (2016) F.Pan, X.Ding, K.D.Launey, H.Li, X.Xu, J.P.Draayer An exactly solvable spherical mean-field plus extended monopole pairing model NUCLEAR STRUCTURE 12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28O; calculated neutron single-particle energy, J, π using spherical shell model, pairing strength vs mass number, gs energy, mass excess vs mass number.
doi: 10.1016/j.nuclphysa.2016.01.004
2016PA18 Nucl.Phys. A952, 70 (2016) F.Pan, S.Yuan, K.D.Launey, J.P.Draayer A new procedure for constructing basis vectors of SU(3) SO(3)
doi: 10.1016/j.nuclphysa.2016.04.024
2016WA14 Nucl.Phys. A950, 1 (2016) Y.Wang, F.Pan, K.D.Launey, Y.-A.Luo, J.P.Draayer Angular momentum projection for a Nilsson mean-field plus pairing model NUCLEAR STRUCTURE 18O, 18,20Ne, 24Mg; calculated low-spin levels, J, π, B(E2), electric quadrupole moment using angular momentum projection for axially deformed Nilsson mean-field plus MSP (Modified Standard Pairing) or NLP (nearest-level pairing). Compared to available data.
doi: 10.1016/j.nuclphysa.2016.03.012
2016ZH13 Phys.Rev. C 93, 044302 (2016) Y.Zhang, Y.Zuo, F.Pan, J.P.Draayer Excited-state quantum phase transitions in the interacting boson model: Spectral characteristics of 0+ states and effective order parameter
doi: 10.1103/PhysRevC.93.044302
2015DY01 Phys.Rev. C 91, 024326 (2015) T.Dytrych, A.C.Hayes, K.D.Launey, J.P.Draayer, P.Maris, J.P.Vary, D.Langr, T.Oberhuber Electron-scattering form factors for 6Li in the ab initio symmetry-guided framework NUCLEAR REACTIONS 6Li(e, e'), E not given; calculated longitudinal C0 form factors using ab initio symmetry-adapted no-core shell-model description (SA-NCSM) for the bare JISP16 and NNLOopt NN interactions, and for several SU(3)-selected spaces. Comparison with available experimental data.
doi: 10.1103/PhysRevC.91.024326
2015GU19 Phys.Rev. C 92, 044303 (2015) X.Guan, K.D.Launey, Y.Wang, F.Pan, J.P.Draayer Ground-state properties of rare-earth nuclei in the Nilsson mean-field plus extended-pairing model NUCLEAR STRUCTURE 152,153,154,155,156,157,158,159,160,161,162,163,164Er, 154,155,156,157,158,159,160,161,162,163,164,165,166Yb, 156,157,158,159,160,161,162,163,164,165,166,167,168Hf; calculated pairing interaction strengths, binding energies, even-odd mass differences, energies of the first pairing excitation states in A=156-164 Er, A=160-165 Yb and A=166-168 Hf nuclei, and moments of inertia for the ground-state bands. Dominance of s, d, and g valence nucleon pairs in the ground state. Nilsson mean-field using proton-proton and neutron-neutron pairing interactions. Comparison with experimental data.
doi: 10.1103/PhysRevC.92.044303
2015LA10 Int.J.Mod.Phys. E24, 1530005 (2015) K.D.Launey, J.P.Draayer, T.Dytrych, G.-H.Sun, S.-H.Dong Approximate symmetries in atomic nuclei from a large-scale shell-model perspective NUCLEAR STRUCTURE 8Be, 12C, 18,20,22Ne, 20,22,24Mg, 28Si; analyzed available data; deduced shell-model spaces expansion beyond the current limits to accommodate particle excitations.
doi: 10.1142/S0218301315300052
2015PA13 Phys.Rev. C 91, 034305 (2015) F.Pan, Y.Zhang, H.-C.Xu, L.-R.Dai, J.P.Draayer Alternative solvable description of the E(5) critical point symmetry in the interacting boson model
doi: 10.1103/PhysRevC.91.034305
2014TO04 Phys.Rev. C 89, 034312 (2014) G.K.Tobin, M.C.Ferriss, K.D.Launey, T.Dytrych, J.P.Draayer, A.C.Dreyfuss, C.Bahri Symplectic no-core shell-model approach to intermediate-mass nuclei NUCLEAR STRUCTURE 20O, 20,22,24Ne, 20,22Mg, 24Si; calculated levels, J, π, B(E2), matter rms radii, quadrupole moments, rotational bands, collective features, elongation β and γ asymmetric configurations. No-core symplectic shell model (NCSpM) with schematic effective many-nucleon long-range interaction. Comparison with experimental data.
doi: 10.1103/PhysRevC.89.034312
2014ZH32 Phys.Rev. C 90, 044310 (2014) Y.Zhang, F.Pan, L.-R.Dai, J.P.Draayer Triaxial rotor in the SU(3) limit of the interacting boson model NUCLEAR STRUCTURE 128Ba; calculated levels, J, π, B(E2) of ground-state and γ bands using triaxial rotor in the SU(3) limit of interacting boson model (IBM) mapping schemes. Comparison with experimental results, and with predictions of simple rotor model.
doi: 10.1103/PhysRevC.90.044310
2014ZH45 Phys.Rev. C 90, 064318 (2014) Y.Zhang, F.Pan, Y.-X.Liu, Y.-A.Luo, J.P.Draayer Emergent dynamical symmetry at the triple point of nuclear deformations NUCLEAR STRUCTURE 64Zn, 108Pd, 114Cd, 134Ba; calculated levels, J, π, B(E2) ratios, E(first 4+)/E(first 2+), E(second 2+)/E(first 4+), E(excited 0+)/E(first 2+). Boson realization of 5-dimensional Euclidean dynamical symmetry in the IBM framework. Comparison with experimental data.
doi: 10.1103/PhysRevC.90.064318
2013DR10 Phys.Lett. B 727, 511 (2013) A.C.Dreyfuss, K.D.Launey, T.Dytrych, J.P.Draayer, C.Bahri Hoyle state and rotational features in Carbon-12 within a no-core shell-model framework NUCLEAR STRUCTURE 12C; calculated point-particle rms matter radii and electric quadrupole moments, level energies, J, π, probability distributions of the ground and Hoyle states; deduced guidance for ab initio shell model calculations. No-core shell model.
doi: 10.1016/j.physletb.2013.10.048
2013DY04 Phys.Rev.Lett. 111, 252501 (2013) ` T.Dytrych, K.D.Launey, J.P.Draayer, P.Maris, J.P.Vary, E.Saule, U.Catalyurek, M.Sosonkina, D.Langr, M.A.Caprio Collective Modes in Light Nuclei from First Principles NUCLEAR STRUCTURE 6Li, 6He, 8Be; calculated B(E2), magnetic dipole moments, rms matter radii. ab initio analyses, comparison with available data.
doi: 10.1103/PhysRevLett.111.252501
2013GU31 Phys.Rev. C 88, 044325 (2013) X.Guan, K.D.Launey, J.Gu, F.Pan, J.P.Draayer Level statistical properties of the spherical mean-field plus standard pairing model NUCLEAR STRUCTURE 48,49,50,51,52,53Ca; calculated level spacing distribution, spectral rigidity, statistical energy spectra. 42,43,44,45,46,47,48,49,50,51,52Ca; calculated pairing gap and compared with experimental data. Spherical mean-field plus standard pairing model calculations, with pairing strength deduced from experimental data. Comparison with Gaussian orthogonal ensemble (GOE) predictions, and Poisson distribution.
doi: 10.1103/PhysRevC.88.044325
2013PA24 Phys.Rev. C 88, 034305 (2013) F.Pan, B.Li, Y.-Z.Zhang, J.P.Draayer Heine-Stieltjes correspondence and a new angular momentum projection for many-particle systems
doi: 10.1103/PhysRevC.88.034305
2013ZH28 Phys.Rev. C 88, 014304 (2013) Y.Zhang, F.Pan, Y.-X.Liu, Y.-A.Luo, J.P.Draayer Shape phase transition and phase coexistence in odd Sm nuclei NUCLEAR STRUCTURE 146,147,148,149,150,151,152,153,154,155,156,157Sm; calculated energies of ground-state band members using several collective rotor and vibrator models; deduced shape phase transition in odd-A Sm nuclei from experimental S(2n) values and experimental energies of ground-band members in even and odd-A Sm nuclei. 150,152Sm; analyzed ground-state and β band members. 151,153Sm; analyzed four collective bands in each nucleus; deduced phase coexistence of rotational and vibrational excitations in 151Sm.
doi: 10.1103/PhysRevC.88.014304
2013ZH52 Phys.Rev. C 88, 064305 (2013) Y.Zhang, L.Bao, X.Guan, F.Pan, J.P.Draayer Ground-state phase transition in odd-A and odd-odd nuclei near N=90 NUCLEAR STRUCTURE Z=54-75, N=80-100; analyzed systematics of S(2n), odd-even mass differences, Q(α), Q(2β), neutron pairing strength, ground-state phase transitions. Comparison with experimental data.
doi: 10.1103/PhysRevC.88.064305
2012DA10 Phys.Rev. C 86, 034316 (2012) L.R.Dai, F.Pan, L.Liu, L.X.Wang, J.P.Draayer Alternative characterization of the spherical to axially deformed shape-phase transition in the interacting boson model NUCLEAR STRUCTURE 152Sm; calculated levels, J, π, B(E2) using the interacting boson model and X(5) model. Spherical to axially deformed shape-phase transition. Comparison with experimental data.
doi: 10.1103/PhysRevC.86.034316
2012DR12 J.Phys.:Conf.Ser. 387, 012017 (2012) J.P.Draayer, T.Dytrych, K.D.Launey, D.Langr, A.C.Dreyfuss, C.Bahri Symmetry-Adopted Ab Initio Open Core Shell Model Theory NUCLEAR STRUCTURE 12C; calculated levels, J, π, 2+1 TO ground state γ strength using NCSpM (no-core symplectic model). Compared with data.
doi: 10.1088/1742-6596/387/1/012017
2012DR13 J.Phys.:Conf.Ser. 366, 012014 (2012) J.P.Draayer, T.Dytrych, K.D.Launey, D.Langr Symmetry-Adapted Ab Initio Shell Model for Nuclear Structure Calculations NUCLEAR STRUCTURE 12C; calculated probability distribution of the lowest calculated 0+ state, deformation using symmetry-adapted ab initio shell model. Also 6,7Li, 16O calculated, but results not given.
doi: 10.1088/1742-6596/366/1/012014
2012DR14 J.Phys.:Conf.Ser. 366, 012015 (2012) K.P.Drumev, A.I.Georgieva, J.P.Draayer Extended (pseudo-)SU(3) models for nuclear structure NUCLEAR STRUCTURE 20Ne, 60Zn; calculated gs energy, mass excess, pairing, deformation using extended (pseudo-)SU(3) model.
doi: 10.1088/1742-6596/366/1/012015
2012DY04 J.Phys.:Conf.Ser. 387, 012016 (2012) T.Dytrych, K.D.Launey, J.P.Draayer, D.Langr Ab initio No-core Shell Model Calculations in a SU(3)-based Coupling Scheme NUCLEAR STRUCTURE 6Li, 8Be, 12C, 16O; calculated low-lying eigen states, J, π using ab initio no-core shell model with JISP16 NN interaction; deduced strong dominance of few intrinsic spin components.No numbers or figures.
doi: 10.1088/1742-6596/387/1/012016
2012GU16 Phys.Rev. C 86, 024313 (2012) X.Guan, K.D.Launey, M.-x.Xie, L.Bao, F.Pan, J.P.Draayer Heine-Stieltjes correspondence and the polynomial approach to the standard pairing problem NUCLEAR STRUCTURE 42,43,44,45,46,47,48,49Ca, 58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77Ni, 146,147,148,149,150,151,152,153Sm; calculated pairing gaps. 110Sn; calculated relevant polynomials and the corresponding eigen-energies. Solution of the Bethe ansatz (Gaudin-Richardson) equations based on Heine-Stieltjes polynomials. Comparison with BCS (pairing) calculations and experimental data.
doi: 10.1103/PhysRevC.86.024313
2012LA10 Phys.Rev. C 85, 044003 (2012) K.D.Launey, T.Dytrych, J.P.Draayer Similarity renormalization group and many-body effects in multiparticle systems NUCLEAR STRUCTURE A=1-28; calculated effect of two-body and three-body interaction renormalization on ab initio calculation of energy spectra. Similarity renormalization group (SRG), spectral distribution theory (SDT).
doi: 10.1103/PhysRevC.85.044003
2012ZH23 Phys.Rev. C 85, 064312 (2012) Y.Zhang, F.Pan, Y.-X.Liu, Y.-A.Luo, J.P.Draayer Analytically solvable prolate-oblate shape phase transitional description within the SU(3) limit of the interacting boson model NUCLEAR STRUCTURE 180Hf, 182,184,186W, 188,190Os, 192,194,196,198Pt; calculated prolate and oblate levels, J of low-lying positive-parity states, quadrupole moment, quadrupole deformation parameter β2, contour diagrams of the ground state energies. Prolate-oblate shape phase transitional description for the SU(3) limit of the interacting boson model. Comparison with experimental data.
doi: 10.1103/PhysRevC.85.064312
2012ZH42 Phys.Rev. C 86, 044312 (2012) Y.Zhang, F.Pan, Y.-A.Luo, Y.-X.Liu, J.P.Draayer Critical-point symmetries in intermediately deformed odd-A nuclei NUCLEAR STRUCTURE 150Sm, 151Eu, 172Os, 173Ir; calculated levels, J, π, B(E2) for ground-state bands using DX(3) critical point symmetries (CPS) and the particle-plus-rotor model (PRM).
doi: 10.1103/PhysRevC.86.044312
2011GU18 Chin.Phys.C 35, 747 (2011) X.Guan, H.Li, Q.Tan, F.Pan, J.P.Draayer Nilsson mean-field plus the extended pairing model description of rare earth nuclei NUCLEAR STRUCTURE 166,167,168,169,170,171,172,173Hf, 154,155,156,157,158,159,160,161,162,163,164,165,166,167,168,169Er, 160,161,162,163,164,165,166,167,168,169,170,171Yb; calculated binding energies, J, π, mass differences. Nilsson mean-field plus, comparison with experimental data.
doi: 10.1088/1674-1137/35/8/009
2011WA33 Int.J.Mod.Phys. E20, 2229 (2011) Y.Wang, L.Li, Y.A.Luo, Y.Zhang, F.Pan, J.P.Draayer γ-unstable spectrum in the SD-pair shell model for identical nucleon system
doi: 10.1142/S0218301311020290
2011ZH31 Phys.Rev. C 84, 034306 (2011) Y.Zhang, F.Pan, Y.Liu, Y.Luo, J.P.Draayer Simple description of odd-A nuclei around the critical point of the spherical to axially deformed shape phase transition NUCLEAR STRUCTURE 187Au, 155Tb, 105Tc, 153Eu, 151Pm; calculated levels, J, π, B(E2). X(3/2), X(3/4), X(3/6) symmetries. X(3/2j+1) model, and X(3) critical point transition from spherical to axially-deformed shapes. Comparison with experimental data.
doi: 10.1103/PhysRevC.84.034306
2011ZH46 Phys.Rev. C 84, 054319 (2011) Y.Zhang, F.Pan, Y.-X.Liu, J.P.Draayer Critical point symmetries in deformed odd-A nuclei NUCLEAR STRUCTURE 193Ir; calculated levels, J, π, ground and β bands, B(E2) ratios. Critical point symmetries (CPS) in the strong-coupling limit, SX(3) symmetry. Comparison with experimental data.
doi: 10.1103/PhysRevC.84.054319
2010DR08 J.Phys.:Conf.Ser. 205, 012006 (2010) J.P.Draayer, T.Dytrych, K.D.Sviratcheva Ab Initio Open Core Shell Model for nuclear structure
doi: 10.1088/1742-6596/205/1/012006
2010GE06 Physics of Part.and Nuclei 41, 1105 (2010) A.I.Georgieva, M.I.Ivanov, S.L.Drenska, K.D.Sviratcheva, J.P.Draayer Dynamical symmetries in contemporary nuclear structure applications NUCLEAR STRUCTURE 40,42,44,46,48Ca, 42,44,46,48Sc, 44,46,48Ti, 46,48V, 48Cr; analyzed nuclear properties; deduced classification scheme. Group theory.
doi: 10.1134/S1063779610070270
2010SH12 Phys.Rev. C 82, 014306 (2010), Erratum Phys.Rev. C 91, 029902 (2015) S.Shen, G.Han, S.Wen, F.Pan, J.Zhu, J.Gu, J.P.Draayer, X.Wu, L.Zhu, C.He, G.Li, B.Yu, T.Wen, Y.Yan High-spin states and level structure in 84Rb NUCLEAR REACTIONS 70Zn(18O, 3np), E=75 MeV; measured Eγ, Iγ, γγ-coin, DCO. 84Rb; deduced levels, J, π, multipolarities, bands, configurations, kinematic moments of inertia. Total Routhian surface calculations. Comparison with projected shell-model calculations, and with structures of 80,82Rb.
doi: 10.1103/PhysRevC.82.014306
2010SH17 Nucl.Phys. A834, 90c (2010) S.-F.Shen, F.Pan, J.-Z.Gu, L.-H.Zhu, X.-G.Wu, J.P.Draayer, T.-D.Wen Low-spin states and level structure of odd-even rubidium isotope: 83Rb RADIOACTIVITY 83Sr(β+); measured Eγ, Iγ, γγ-coin. 83Rb; deduced levels, J, π, yrast states. Comparison with projected shell model.
doi: 10.1016/j.nuclphysa.2010.01.027
2010ZH42 Phys.Rev. C 82, 034327 (2010) Y.Zhang, F.Pan, Y.-X.Liu, Z.-F.Hou, J.P.Draayer Analytical description of odd-A nuclei near the critical point of the spherical to axially deformed shape transition NUCLEAR STRUCTURE 155Tb, 189Au; calculated levels, J, π, and E2 transition rates using a coupling scheme involving using X(5/(2j+1)) model. Comparison with experimental data.
doi: 10.1103/PhysRevC.82.034327
2009LU14 Phys.Rev. C 80, 014311 (2009) Y.Luo, Y.Zhang, X.Meng, F.Pan, J.P.Draayer Quantum phase transitional patterns in the SD-pair shell model
doi: 10.1103/PhysRevC.80.014311
2009PA02 J.Phys.(London) G36, 025103 (2009) Exact boson mapping of the nuclear pairing Hamiltonian
doi: 10.1088/0954-3899/36/2/025103
2009PA38 Phys.Rev. C 80, 044306 (2009) F.Pan, M.-X.Xie, X.Guan, L.-R.Dai, J.P.Draayer New exact solutions of the standard pairing model for well-deformed nuclei
doi: 10.1103/PhysRevC.80.044306
2008DR06 Int.J.Mod.Phys. E17, Supplement 1, 133 (2008) J.P.Draayer, T.Dytrych, K.D.Sviratcheva, C.Bahri, J.P.Vary Symplectic no-core shell model NUCLEAR STRUCTURE 12C, 16O; calculated lowest excited states, J, π. Sympletic no-core shell model (Sp-NCSM).
doi: 10.1142/S0218301308011811
2008DY01 J.Phys.(London) G35, 095101 (2008) T.Dytrych, K.D.Sviratcheva, C.Bahri, J.P.Draayer, J.P.Vary Highly deformed modes in the ab initio symplectic no-core shell model NUCLEAR STRUCTURE 12C, 16O; calculated wavefunction of ground state rotational band; symplectic basis; deformed many-particle many-hole configurations; no-core shell model.
doi: 10.1088/0954-3899/35/9/095101
2008LU18 Int.J.Mod.Phys. E17, Supplement 1, 245 (2008) Y.-A.Luo, F.Pan, J.P.Draayer, P.-Z.Ning SD-pair shell model for even-even systems NUCLEAR STRUCTURE 126,128,130,132,134Xe; calculated low-lying level energies, J, π.
doi: 10.1142/S0218301308011896
2008ME04 Phys.Rev. C 77, 047304 (2008) X.Meng, F.Wang, Y.Luo, F.Pan, J.P.Draayer SD-pair shell model study for 126Xe and 128Ba NUCLEAR STRUCTURE 126Xe, 128Ba; calculated levels, J, π, B(M1), B(E2). SD-pair shell model. Comparison with experimental data.
doi: 10.1103/PhysRevC.77.047304
2008PA32 J.Phys.(London) G35, 125105 (2008) F.Pan, T.Wang, Y.-S.Huo, J.P.Draayer Quantum phase transitions in the consistent-Q Hamiltonian of the interacting boson model
doi: 10.1088/0954-3899/35/12/125105
2008PA43 Int.J.Mod.Phys. E17, Supplement 1, 386 (2008) F.Pan, M.-X.Xie, H.Chen, W.Ba, Q.Yuan, J.P.Draayer Mean-field plus various types of pairing interactions and an exact boson mapping of the reduced BCS pairing interaction
doi: 10.1142/S0218301308012002
2008WA12 Chin.Phys.Lett. 25, 2432 (2008) F.-R.Wang, L.Liu, Y.-A.Luo, F.Pan, J.P.Draayer U(5)- O(6) Phase Transition in the SD-Pair Shell Model
doi: 10.1088/0256-307X/25/7/028
2007DR13 Eur.Phys.J. Special Topics 150, 97 (2007) Microscopic calculations for upper-fp, g9/2 shell nuclei: Ge
doi: 10.1140/epjst/e2007-00276-6
2007DY01 Phys.Rev.Lett. 98, 162503 (2007) T.Dytrych, Kristina D.Sviratcheva, C.Bahri, J.P.Draayer, J.P.Vary Evidence for Symplectic Symmetry in Ab Initio No-Core Shell Model Results for Light Nuclei NUCLEAR STRUCTURE 12C, 16O; calculated ground-state configurations; deduced symplectic symmetry. No-core shell model.
doi: 10.1103/PhysRevLett.98.162503
2007DY02 Phys.Rev. C 76, 014315 (2007) T.Dytrych, K.D.Sviratcheva, C.Bahri, J.P.Draayer, J.P.Vary Dominant role of symplectic symmetry in ab initio no-core shell model results for light nuclei NUCLEAR STRUCTURE 12C, 16O; calculated B(E2) within the framework of no-core shell model.
doi: 10.1103/PhysRevC.76.014315
2007SV01 Nucl.Phys. A786, 31 (2007) K.D.Sviratcheva, J.P.Draayer, J.P.Vary Global properties of fp-shell interactions in many-nucleon systems NUCLEAR STRUCTURE 58Ni, 58Cu; calculated levels, J, π. Effective interactions compared using spectral distribution theory.
doi: 10.1016/j.nuclphysa.2007.01.087
2006BA07 Int.J.Mod.Phys. E15, 101 (2006) C.Bahri, Y.-A.Luo, J.P.Draayer On the survival of the SD-pair shell model under pseudo-spin transformation
doi: 10.1142/S0218301306003928
2006LU07 Phys.Rev. C 73, 044323 (2006) Y.Luo, F.Pan, T.Wang, P.Ning, J.P.Draayer Vibration-rotation transitional patterns in the SD-pair shell model
doi: 10.1103/PhysRevC.73.044323
2006LU18 Int.J.Mod.Phys. E15, 1751 (2006) Y.A.Luo, F.Pan, J.P.Draayer, P.Z.Ning Projected SD-pair shell model NUCLEAR STRUCTURE 132Ba; calculated levels, J, π. Projected SD-pair shell model, comparison with data.
doi: 10.1142/S0218301306005356
2006PA29 Eur.Phys.J. A 28, 313 (2006) Transitional description of mass spectra and radiative decay widths for q(q-bar)mesons in the U(4) model
doi: 10.1140/epja/i2006-10062-4
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