NSR Query Results
Output year order : Descending NSR database version of April 27, 2024. Search: Author = T.Dytrych Found 29 matches. 2024BU02 Phys.Rev. C 109, 014616 (2024) M.Burrows, K.D.Launey, A.Mercenne, R.B.Baker, G.H.Sargsyan, T.Dytrych, D.Langr Ab initio translationally invariant nucleon-nucleus optical potentials
doi: 10.1103/PhysRevC.109.014616
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
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
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
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
2020BA35 Phys.Rev. C 102, 014320 (2020) R.B.Baker, K.D.Launey, S.Bacca, N.N.Dinur, T.Dytrych Benchmark calculations of electromagnetic sum rules with a symmetry-adapted basis and hyperspherical harmonics NUCLEAR STRUCTURE 4He; calculated ground state energy, point-proton rms radius, nonenergy and energy weighted sum rules for monopole and dipole transitions, electric dipole polarizability, quadrupole sum rule. Calculations used ab initio symmetry-adapted no-core shell model (SA-NCSM) with the Lanczos algorithm, and JISP16 and N3LO-EM nucleon-nucleon interactions. Comparison with other model predictions.
doi: 10.1103/PhysRevC.102.014320
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
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
2020MC02 Phys.Rev.Lett. 125, 102505 (2020) A.E.McCoy, M.A.Caprio, T.Dytrych, P.J.Fasano Emergent Sp(3, R) Dynamical Symmetry in the Nuclear Many-Body System from an Ab Initio Description NUCLEAR STRUCTURE 7Be; calculated wave functions, negative parity energy spectrum, J, π.
doi: 10.1103/PhysRevLett.125.102505
2019KN03 Acta Phys.Pol. B50, 541 (2019) F.Knapp, T.Dytrych, D.Langr, T.Oberhuber Importance Basis Truncation in the Symmetry-adapted No-core Shell Model NUCLEAR STRUCTURE 12C; calculated ground-state energy, low-lying levels energies, B(E2). Ab-initio symmetry-adapted no-core shell model approach (SA-NCSM).
doi: 10.5506/aphyspolb.50.541
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
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
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
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
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
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
2013LU01 Nucl.Phys. A897, 109 (2013) F.Q.Luo, M.A.Caprio, T.Dytrych Construction of the center-of-mass free space for the SU(3) no-core shell model
doi: 10.1016/j.nuclphysa.2012.11.003
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
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
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
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
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
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
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