NSR Query Results
Output year order : Descending NSR database version of April 11, 2024. Search: Author = G.R.Jansen Found 37 matches. 2023CH26 Phys.Lett. B 843, 138025 (2023) S.Chen, F.Browne, P.Doornenbal, J.Lee, A.Obertelli, Y.Tsunoda, T.Otsuka, Y.Chazono, G.Hagen, J.D.Holt, G.R.Jansen, K.Ogata, N.Shimizu, Y.Utsuno, K.Yoshida, N.L.Achouri, H.Baba, D.Calvet, F.Chateau, N.Chiga, A.Corsi, M.L.Cortes, A.Delbart, J.-M.Gheller, A.Giganon, A.Gillibert, C.Hilaire, T.Isobe, T.Kobayashi, Y.Kubota, V.Lapoux, H.N.Liu, T.Motobayashi, I.Murray, H.Otsu, V.Panin, N.Paul, W.Rodriguez, H.Sakurai, M.Sasano, D.Steppenbeck, L.Stuhl, Y.L.Sun, Y.Togano, T.Uesaka, K.Wimmer, K.Yoneda, O.Aktas, T.Aumann, L.X.Chung, F.Flavigny, S.Franchoo, I.Gasparic, R.-B.Gerst, J.Gibelin, K.I.Hahn, D.Kim, T.Koiwai, Y.Kondo, P.Koseoglou, C.Lehr, B.D.Linh, T.Lokotko, M.MacCormick, K.Moschner, T.Nakamura, S.Y.Park, D.Rossi, E.Sahin, P.-A.Soderstrom, D.Sohler, S.Takeuchi, H.Tornqvist, V.Vaquero, V.Wagner, S.Wang, V.Werner, X.Xu, H.Yamada, D.Yan, Z.Yang, M.Yasuda, L.Zanetti Level structures of 56, 58Ca cast doubt on a doubly magic 60Ca NUCLEAR REACTIONS 1H(57Sc, 2p)56Ca, E=209 MeV/nucleon; 1H(59Sc, 2p)58Ca, E=199 MeV/nucleon, [57,59Sc secondary beams from 9Be(70Zn, X), E=345 MeV/nucleon, followed by separation and identification of ions of interest using the BigRIPS separator at RIBF-RIKEN facility]; measured reaction residues of 56Ca and 58Ca through identification by the SAMURAI spectrometer, Doppler-corrected Eγ, Iγ, (particle)γ-coin using the DALI2+ array using MINOS liquid hydrogen target. 56,58Ca; deduced energies of the first 2+ levels. Comparison with shell-model calculations with the GXPF1B Hamiltonian in full pf model space, and the state-of-the-art ab initio approaches: VS-IMSRG method, and CC calculations. Systematics of energies of the first 2+ states and S(2n) from experiment (N=22-36) and theory in N=22-54 Ca isotopes.
doi: 10.1016/j.physletb.2023.138025
2022HA19 Phys.Rev. C 105, 064311 (2022) G.Hagen, S.J.Novario, Z.H.Sun, T.Papenbrock, G.R.Jansen, J.G.Lietz, T.Duguet, A.Tichai Angular-momentum projection in coupled-cluster theory: Structure of 34Mg NUCLEAR STRUCTURE 8Be; calculated energies using symmetry-unrestricted Hartree-Fock and HF-RVAP as a function of the mass quadrupole moment q20. 20Ne, 34Mg; calculated the norm kernels and Hamiltonian kernels as function of the rotation angle using Hartree-Fock and CCD theories. 8Be, 20Ne, 34Mg; calculated projected coupled-cluster energies of the ground and excited states as a function of oscillator frequency using CCD, SLD, and SQD approximations. 44,46,48Ti, 48,50Cr; calculated low-lying states of J=0, 2 and 4 using projection-after-variation Hartree-Fock (PAV HF), variation-after-projection Hartree-Fock (VAP-HF), and projected CCD, SLD, and SQD methods, and compared to FCI results. Angular-momentum projection after variation with the disentangled coupled-cluster formalism and a Hermitian approach. Comparison with two-nucleon interaction from chiral effective field theory and for pf-shell nuclei within the traditional shell model, and with experimental data.
doi: 10.1103/PhysRevC.105.064311
2022MA04 Phys.Rev.Lett. 128, 022502 (2022) S.Malbrunot-Ettenauer, S.Kaufmann, S.Bacca, C.Barbieri, J.Billowes, M.L.Bissell, K.Blaum, B.Cheal, T.Duguet, R.F.Garcia Ruiz, W.Gins, C.Gorges, G.Hagen, H.Heylen, J.D.Holt, G.R.Jansen, A.Kanellakopoulos, M.Kortelainen, T.Miyagi, P.Navratil, W.Nazarewicz, R.Neugart, G.Neyens, W.Nortershauser, S.J.Novario, T.Papenbrock, T.Ratajczyk, P.-G.Reinhard, L.V.Rodriguez, R.Sanchez, S.Sailer, A.Schwenk, J.Simonis, V.Soma, S.R.Stroberg, L.Wehner, C.Wraith, L.Xie, Z.Y.Xu, X.F.Yang, D.T.Yordanov Nuclear Charge Radii of the Nickel Isotopes 58-68, 70Ni NUCLEAR MOMENTS 58,59,60,61,62,63,64,65,66,67,68Ni, 70Ni; measured frequency-time spectrum; deduced isotope shifts, mean-square charge radii. Comparison with ab initio approaches. Collinear laser spectroscopy beam line COLLAPS, ISOLDE/CERN.
doi: 10.1103/PhysRevLett.128.022502
2021DJ02 Phys.Rev. C 104, 024324 (2021) T.Djarv, A.Ekstrom, C.Forssen, G.R.Jansen Normal-ordering approximations and translational (non)invariance NUCLEAR STRUCTURE 4He, 16O; calculated center-of-mass (CM) excitation metrics and harmonic oscillator (HO) frequencies, ground-state energies per nucleon, eigenstates, point-proton radii. Single-reference normal-ordering two-body (SR-NO2B) approximation approach to potentially incorporate dominant three-nucleon force (3NF) as an effective two-nucleon force (2NF) in the framework of full no-core shell-model (NCSM) calculations, with and without three-nucleon forces.
doi: 10.1103/PhysRevC.104.024324
2021KO08 Nat.Phys. 17, 439 (2021), Erratum Nat.Phys. 17, 539 (2021) A.Koszorus, X.F.Yang, W.G.Jiang, S.J.Novario, S.W.Bai, J.Billowes, C.L.Binnersley, M.L.Bissell, T.E.Cocolios, B.S.Cooper, R.P.de Groote, A.Ekstrom, K.T.Flanagan, C.Forssen, S.Franchoo, R.F.Garcia Ruiz, F.P.Gustafsson, G.Hagen, G.R.Jansen, A.Kanellakopoulos, M.Kortelainen, W.Nazarewicz, G.Neyens, T.Papenbrock, P.-G.Reinhard, C.M.Ricketts, B.K.Sahoo, A.R.Vernon, S.G.Wilkins Charge radii of exotic potassium isotopes challenge nuclear theory and the magic character of N = 32 NUCLEAR MOMENTS 36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52K; measured frequencies; deduced hyperfine structure spectra, charge radii, new magic numbers. Comparison with NNLO, HFB calculations.
doi: 10.1038/s41567-020-01136-5
2021MO23 Nat.Phys. 17, 1099 (2021) M.Mougeot, D.Atanasov, J.Karthein, R.N.Wolf, P.Ascher, K.Blaum, K.Chrysalidis, G.Hagen, J.D.Holt, W.J.Huang, G.R.Jansen, I.Kulikov, Yu.A.Litvinov, D.Lunney, V.Manea, T.Miyagi, T.Papenbrock, L.Schweikhard, A.Schwenk, T.Steinsberger, S.R.Stroberg, Z.H.Sun, A.Welker, F.Wienholtz, S.G.Wilkins, K.Zuber Mass measurements of 99-101In challenge ab initio nuclear theory of the nuclide 100Sn NUCLEAR REACTIONS La(p, X)99In/100In/101In, E=1.4 GeV; measured reaction products, TOF; deduced atomic masses. Comparison with AME2020, theoretical calculations.
doi: 10.1038/s41567-021-01326-9
2021NO04 Phys.Rev.Lett. 126, 182502 (2021) S.Novario, P.Gysbers, J.Engel, G.Hagen, G.R.Jansen, T.D.Morris, P.Navratil, T.Papenbrock, S.Quaglioni Coupled-Cluster Calculations of Neutrinoless Double-β Decay in 48Ca RADIOACTIVITY 48Ca(2β-); calculated nuclear matrix element for the neutrinoless ββ-decay using coupled-cluster theory and nuclear interactions from chiral effective field theory.
doi: 10.1103/PhysRevLett.126.182502
2021SU22 Phys.Rev. C 104, 064310 (2021) Z.H.Sun, G.Hagen, G.R.Jansen, T.Papenbrock Effective shell-model interaction for nuclei "southeast" of 100Sn NUCLEAR STRUCTURE 100Sn; calculated single-particle neutron and single-hole proton states from effective shell-model interaction for the valence space and using chiral nucleon-nucleon and three-nucleon forces and single-reference coupled-cluster theory and ΔNNLOGO potentials, with detailed matrix elements given in the Supplemental Material. 98Cd, 100In, 100,102Sn; calculated ground-state energies relative using 1.8/2.0(EM) and ΔNNLOGO potentials and compared to experimental data. 102,104,106,108Sn, 98Cd, 100,101,103,105,107In, 100,102,104,106Cd, ; calculated low-lying positive-parity levels from Jπ=0+ to 8+ for even-A and low-lying positive- and negative-parity levels from Jπ=1/2- to 13/2+ for odd-A using 1.8/2.0(EM) and ΔNNLOGO potentials, and compared to experimental data. Systematic derivation of the particle-hole variant of the shell-model coupled-cluster method to compute nuclei in the vicinity of 100Sn, with the shell-model effective interaction defined in a model space consisting of particles and holes.
doi: 10.1103/PhysRevC.104.064310
2020BA27 Phys.Rev.Lett. 124, 222504 (2020) S.Bagchi, R.Kanungo, Y.K.Tanaka, H.Geissel, P.Doornenbal, W.Horiuchi, G.Hagen, T.Suzuki, N.Tsunoda, D.S.Ahn, H.Baba, K.Behr, F.Browne, S.Chen, M.L.Cortes, A.Estrade, N.Fukuda, M.Holl, K.Itahashi, N.Iwasa, G.R.Jansen, W.G.Jiang, S.Kaur, A.O.Macchiavelli, S.Y.Matsumoto, S.S.Momiyama, I.Murray, T.Nakamura, S.J.Novario, H.J.Ong, T.Otsuka, T.Papenbrock, S.Paschalis, A.Prochazka, C.Scheidenberger, P.Schrock, Y.Shimizu, D.Steppenbeck, H.Sakurai, D.Suzuki, H.Suzuki, M.Takechi, H.Takeda, S.Takeuchi, R.Taniuchi, K.Wimmer, K.Yoshida Two-Neutron Halo is Unveiled in 29F NUCLEAR REACTIONS C(29F, X), E=255 MeV/nucleon; C(27F, X), E=250 MeV/nucleon; measured reaction products, En, In. 27,29F; deduced two-neutron Borromean halo. Comparison with theoretical calculations.
doi: 10.1103/PhysRevLett.124.222504
2020JI11 Phys.Rev. C 102, 054301 (2020) W.G.Jiang, A.Ekstrom, C.Forssen, G.Hagen, G.R.Jansen, T.Papenbrock Accurate bulk properties of nuclei from A = 20 to ∞ from potentials with Δ isobars NUCLEAR STRUCTURE 2,3H, 3,4He, 16,22,24O, 40,48,50,52,54,56,58,60Ca, 78Ni, 90Zr, 100,132Sn; calculated binding energies, and charge radii for Ca isotopes, quadrupole moment for 2H, first 3- state of 16O, and first 2+ states of 22O, 24O and 48Ca. Coupled-cluster calculations with ΔNNLOGO interactions optimized from chiral effective field theory. Comparison with experimental data. Computed neutron-proton and proton-proton phase shifts for the contact and selected peripheral partial waves with the ΔNLOGO and ΔNNLOGO potentials.
doi: 10.1103/PhysRevC.102.054301
2020NO10 Phys.Rev. C 102, 051303(R) (2020) S.J.Novario, G.Hagen, G.R.Jansen, T.Papenbrock Charge radii of exotic neon and magnesium isotopes NUCLEAR STRUCTURE 18,20,22,24,26,28,30,32,34Ne, 22,24,26,28,30,32,34,36,38,40Mg; calculated charge radii, isotope shifts, ground-state energies, S(2n) using nucleon-nucleon and three-nucleon potentials from chiral effective field theory (EFT), and coupled-cluster methods. Comparison with experimental data.
doi: 10.1103/PhysRevC.102.051303
2019GY02 Nat.Phys. 15, 428 (2019) P.Gysbers, G.Hagen, J.D.Holt, G.R.Jansen, T.D.Morris, P.Navratil, T.Papenbrock, S.Quaglioni, A.Schwenk, S.R.Stroberg, K.A.Wendt Discrepancy between experimental and theoretical β-decay rates resolved from first principles NUCLEAR STRUCTURE 3H, 6Li, 7Be, 8He, 10C, 14O, 19,24Ne, 37K, 25,28Al, 24,26Na, 30Mg, 33,34P, 42,43,46Sc, 42,45Ti, 45,47V, 100Sn; calculated the Gamow–Teller strength for β decay.
doi: 10.1038/s41567-019-0450-7
2019LI10 Phys.Rev.Lett. 122, 072502 (2019) H.N.Liu, A.Obertelli, P.Doornenbal, C.A.Bertulani, G.Hagen, J.D.Holt, G.R.Jansen, T.D.Morris, A.Schwenk, R.Stroberg, N.Achouri, H.Baba, F.Browne, D.Calvet, F.Chateau, S.Chen, N.Chiga, A.Corsi, M.L.Cortes, A.Delbart, J.-M.Gheller, A.Giganon, A.Gillibert, C.Hilaire, T.Isobe, T.Kobayashi, Y.Kubota, V.Lapoux, T.Motobayashi, I.Murray, H.Otsu, V.Panin, N.Paul, W.Rodriguez, H.Sakurai, M.Sasano, D.Steppenbeck, L.Stuhl, Y.L.Sun, Y.Togano, T.Uesaka, K.Wimmer, K.Yoneda, O.Aktas, T.Aumann, L.X.Chung, F.Flavigny, S.Franchoo, I.Gasparic, R.-B.Gerst, J.Gibelin, K.I.Hahn, D.Kim, T.Koiwai, Y.Kondo, P.Koseoglou, J.Lee, C.Lehr, B.D.Linh, T.Lokotko, M.MacCormick, K.Moschner, T.Nakamura, S.Y.Park, D.Rossi, E.Sahin, D.Sohler, P.-A.Soderstrom, S.Takeuchi, H.Tornqvist, V.Vaquero, V.Wagner, S.Wang, V.Werner, X.Xu, H.Yamada, D.Yan, Z.Yang, M.Yasuda, L.Zanetti How Robust is the N=34 Subshell Closure? First Spectroscopy of 52Ar NUCLEAR REACTIONS 1H(53K, 2p), E=245 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced γ-ray energies, J, π, σ. Comparison with theoretical calculations.
doi: 10.1103/PhysRevLett.122.072502
2019RA06 Phys.Rev. C 99, 021301 (2019) J.S.Randhawa, R.Kanungo, M.Holl, J.D.Holt, P.Navratil, S.R.Stroberg, G.Hagen, G.R.Jansen, M.Alcorta, C.Andreoiu, C.Barnes, C.Burbadge, D.Burke, A.A.Chen, A.Chester, G.Christian, S.Cruz, B.Davids, J.Even, G.Hackman, J.Henderson, S.Ishimoto, P.Jassal, S.Kaur, M.Keefe, D.Kisliuk, R.Krucken, J.Liang, J.Lighthall, E.McGee, J.Measures, M.Moukaddam, E.Padilla-Rodal, A.Shotter, I.J.Thompson, J.Turko, M.Williams, O.Workman Observation of excited states in 20Mg sheds light on nuclear forces and shell evolution NUCLEAR REACTIONS 2H(20Mg, d), (20Mg, d'), E=8.5 MeV/nucleon, [secondary 20Mg beam produced in Si(p, X), E=480 MeV fragmentation reaction using SiC target at ISAC-II facility]; measured scattered deuteron spectra, differential σ(θ) using annular single-sided silicon strip detector array and CsI(Tl) detectors (IRIS reaction spectroscopy facility) at TRIUMF. 20Mg; deduced levels, J, π, proton-unbound resonances. Comparison with ab initio calculations using the valence-space in-medium similarity renormalization-group (VS-IMSRG) approach.
doi: 10.1103/PhysRevC.99.021301
2018BA42 Phys.Rev. C 98, 054301 (2018) A.Bansal, S.Binder, A.Ekstrom, G.Hagen, G.R.Jansen, T.Papenbrock Pion-less effective field theory for atomic nuclei and lattice nuclei NUCLEAR STRUCTURE 3H, 3,4He, 16O, 40Ca; calculated binding energies per nucleon and point-proton radii, g.s. energy and separation momentum of 3H and 4He, correlation between the triton and 4He binding energies. Pion-less effective field theory (EFT) as discrete variable representation (DVR) in the harmonic oscillator basis at leading-order and next-to-leading-order. Relevance to different lattice quantum chromodynamics (QCD) approaches to light nuclei.
doi: 10.1103/PhysRevC.98.054301
2018MO07 Phys.Rev.Lett. 120, 152503 (2018) T.D.Morris, J.Simonis, S.R.Stroberg, C.Stumpf, G.Hagen, J.D.Holt, G.R.Jansen, T.Papenbrock, R.Roth, A.Schwenk Structure of the Lightest Tin Isotopes NUCLEAR STRUCTURE 100,108,116,124,132Sn, 101Sn, 105Te; calculated energy levels, J, π using nucleon-nucleon and three-nucleon forces constrained by data of few-nucleon systems.
doi: 10.1103/physrevlett.120.152503
2018RO26 Phys.Rev. C 98, 044625 (2018) J.Rotureau, P.Danielewicz, G.Hagen, G.R.Jansen, F.M.Nunes Microscopic optical potentials for calcium isotopes NUCLEAR REACTIONS 40Ca(n, n), E=5.17, 6.34 MeV; 48Ca(n, n), E=4.00, 7.81 MeV; calculated differential σ(θ), real and imaginary parts of the diagonal optical potential and scattering phase shifts. 41,49Ca; calculated energies of bound states, and real part of the radical optical potentials. Green's function approach with coupled-cluster method with chiral nucleon-nucleon and three-nucleon interaction NNLOsat, and the chiral nucleon-nucleon interaction NNLOop. Comparison with experimental data.
doi: 10.1103/PhysRevC.98.044625
2018SU23 Phys.Rev. C 98, 054320 (2018) Z.H.Sun, T.D.Morris, G.Hagen, G.R.Jansen, T.Papenbrock Shell-model coupled-cluster method for open-shell nuclei NUCLEAR STRUCTURE 6,7,8He, 6,7,8Li; calculated low-lying levels, J, π, squared point-proton radii, and isotope shifts using shell-model coupled-cluster method employing 4He core. Comparison with other theoretical predictions.
doi: 10.1103/PhysRevC.98.054320
2018WU03 Phys.Rev. C 97, 054306 (2018) Q.Wu, B.S.Hu, F.R.Xu, Y.Z.Ma, S.J.Dai, Z.H.Sun, G.R.Jansen Chiral NNLOsat descriptions of nuclear multipole resonances within the random-phase approximation NUCLEAR STRUCTURE 4He, 16,22,24O, 40,48Ca; calculated charge radii, strength distributions and centroids of isoscalar monopole, isovector dipole and isoscalar quadrupole resonances, transition densities of protons and neutrons using random-phase approximation (RPA) framework with realistic nuclear forces and chiral potential NNLOsat. 22,24O; deduced low-lying strengths. Comparison with experimental data.
doi: 10.1103/PhysRevC.97.054306
2016GA34 Nat.Phys. 12, 594 (2016) R.F.Garcia Ruiz, M.L.Bissell, K.Blaum, A.Ekstrom, N.Frommgen, G.Hagen, M.Hammen, K.Hebeler, J.D.Holt, G.R.Jansen, M.Kowalska, K.Kreim, W.Nazarewicz, R.Neugart, G.Neyens, W.Nortershauser, T.Papenbrock, J.Papuga, A.Schwenk, J.Simonis, K.A.Wendt, D.T.Yordanov Unexpectedly large charge radii of neutron-rich calcium isotopes NUCLEAR REACTIONS U(p, X)43Ca/44Ca/45Ca/46Ca/47Ca/48Ca/49Ca/50Ca/51Ca/52Ca, E=1.4GeV; measured hyperfine structure spectra; deduced charge radii. Comparison with available data.
doi: 10.1038/nphys3645
2016HA27 Nat.Phys. 12, 186 (2016) G.Hagen, A.Ekstrom, C.Forssen, G.R.Jansen, W.Nazarewicz, T.Papenbrock, K.A.Wendt, S.Bacca, N.Barnea, B.Carlsson, C.Drischler, K.Hebeler, M.Hjorth-Jensen, M.Miorelli, G.Orlandini, A.Schwenk, J.Simonis Neutron and weak-charge distributions of the 48Ca nucleus NUCLEAR STRUCTURE 48Ca; calculated neutron skin parameters, radii. Ab initio calculations.
doi: 10.1038/nphys3529
2016HA32 Phys.Rev.Lett. 117, 172501 (2016) G.Hagen, G.R.Jansen, T.Papenbrock Structure of 78Ni from First-Principles Computations NUCLEAR STRUCTURE 48Ca, 77,78,79,80Ni; analyzed available data; calculated energy levels, J, π.
doi: 10.1103/PhysRevLett.117.172501
2016HA34 Phys.Scr. 91, 063006 (2016) G.Hagen, M.Hjorth-Jensen, G.R.Jansen, T.Papenbrock Emergent properties of nuclei from ab initio coupled-cluster calculations COMPILATION 4,8He, 14C, 16O, 40,48Ca, 56Ni; compiled gs energy, mass excess, difference between theoretical charge radii and data; calculated gs energy, mass excess, charge radii using ab initio approach with chiral NNLOsat interaction. NUCLEAR STRUCTURE 16,22,24,28O; calculated gs energy, mass excess using two NNLOsat interactions. Compared to available data. 17,23,25O, 53,55,61Ca; calculated low-lying unbound levels, J, π using harmonic oscillator HF basis and Gamow-Hartree-Fock basis. 20Ne, 24Mg; calculated yrast states using CCEI (Coupled Cluster Effective Interaction) and USDB; compared to data.
doi: 10.1088/0031-8949/91/6/063006
2016JA03 Phys.Rev. C 94, 011301 (2016) G.R.Jansen, M.D.Schuster, A.Signoracci, G.Hagen, P.Navratil Open sd-shell nuclei from first principles NUCLEAR STRUCTURE 18,19,20,21,22,23,24,25,26,27,28,29,30Ne, 20,21,22,23,24,25,26,27,28,29,30Mg; calculated ground-state energies. 24F, 19,20,24,25,26,27Ne, 22,23,24,25,26Mg; calculated low-spin levels, J, π, B(E2) strengths. Calculations are based on an extension of ab initio coupled-cluster effective interaction (CCEI) method. Comparison with experimental data taken from the ENSDF database.
doi: 10.1103/PhysRevC.94.011301
2016KA37 Phys.Rev.Lett. 117, 102501 (2016) R.Kanungo, W.Horiuchi, G.Hagen, G.R.Jansen, P.Navratil, F.Ameil, J.Atkinson, Y.Ayyad, D.Cortina-Gil, I.Dillmann, A.Estrade, A.Evdokimov, F.Farinon, H.Geissel, G.Guastalla, R.Janik, M.Kimura, R.Knobel, J.Kurcewicz, Yu.A.Litvinov, M.Marta, M.Mostazo, I.Mukha, C.Nociforo, H.J.Ong, S.Pietri, A.Prochazka, C.Scheidenberger, B.Sitar, P.Strmen, Y.Suzuki, M.Takechi, J.Tanaka, I.Tanihata, S.Terashima, J.Vargas, H.Weick, J.S.Winfield Proton Distribution Radii of 12-19C Illuminate Features of Neutron Halos NUCLEAR REACTIONS Be(20Ne, X), (40Ar, X)12C/13C/14C/15/16C/17C/18C/19C, E=1 GeV/nucleon; measured reaction products; deduced σ, root-mean-square proton and matter radii, neutron skin thickness. Comparison with ab initio calculations.
doi: 10.1103/PhysRevLett.117.102501
2016MI19 Phys.Rev. C 94, 034317 (2016) M.Miorelli, S.Bacca, N.Barnea, G.Hagen, G.R.Jansen, G.Orlandini, T.Papenbrock Electric dipole polarizability from first principles calculations NUCLEAR STRUCTURE 4He, 16,22O, 40Ca; calculated electric dipole polarizability, photoabsorption response functions. Coupled-cluster method with bound-state techniques, and using different interactions from chiral effective field theory. Comparison with experimental data. Relevance to radii of proton and neutron distributions.
doi: 10.1103/PhysRevC.94.034317
2015EK01 Phys.Rev. C 91, 051301 (2015) A.Ekstrom, G.R.Jansen, K.A.Wendt, G.Hagen, T.Papenbrock, B.D.Carlsson, C.Forssen, M.Hjorth-Jensen, P.Navratil, W.Nazarewicz Accurate nuclear radii and binding energies from a chiral interaction NUCLEAR STRUCTURE 2H, 4,8He, 6,9Li, 14C, 16O, 40Ca; calculated ground-state energies, charge radii, quadrupole moment for deuteron. 6Li, 14C, 16O, 22,24F, 22,24O, 40Ca; calculated levels, J, π, charge density in 16O, scattering lengths, and effective ranges in low-energy proton-proton scattering, scattering phase shifts in low-energy neutron-proton scattering, half-life for the β- decay of 3H; deduced consistently optimized interaction from chiral EFT at NNLO for nuclei and infinite nuclear matter. Coupled-cluster calculations based on chiral effective field theory interaction (NNLOsat). Comparison with experimental data.
doi: 10.1103/PhysRevC.91.051301
2015SI12 Phys.Rev. C 91, 064320 (2015) A.Signoracci, T.Duguet, G.Hagen, G.R.Jansen Ab initio Bogoliubov coupled cluster theory for open-shell nuclei NUCLEAR STRUCTURE 16,18,20O, 18Ne, 20Mg; calculated ground-state energies and the cluster amplitudes at the singles and doubles level (BCCSD), algebraically and diagrammatically. Ab initio Bogoliubov coupled cluster (BCC) theory for open shell nuclei.
doi: 10.1103/PhysRevC.91.064320
2014EK01 Phys.Rev.Lett. 113, 262504 (2014) A.Ekstrom, G.R.Jansen, K.A.Wendt, G.Hagen, T.Papenbrock, S.Bacca, B.Carlsson, D.Gazit Effects of Three-Nucleon Forces and Two-Body Currents on Gamow-Teller Strengths RADIOACTIVITY 14C, 22,24O(β-); calculated quenching factor; deduced a novel coupled-cluster technique for the computation of spectra in the daughter nuclei and made several predictions and spin assignments in the exotic neutron-rich isotopes of fluorine. NUCLEAR STRUCTURE 14N, 22,24F; calculated energy levels, J, π.
doi: 10.1103/PhysRevLett.113.262504
2014JA14 Phys.Rev.Lett. 113, 142502 (2014) G.R.Jansen, J.Engel, G.Hagen, P.Navratil, A.Signoracci Ab Initio Coupled-Cluster Effective Interactions for the Shell Model: Application to Neutron-Rich Oxygen and Carbon Isotopes NUCLEAR STRUCTURE 19,20,21,22,23,24O, 17,18,19,20,21,22C; calculated energy levels, J, π. Comparison with available data.
doi: 10.1103/PhysRevLett.113.142502
2014VA02 Phys.Rev. C 89, 054323 (2014) Zs.Vajta, M.Stanoiu, D.Sohler, G.R.Jansen, F.Azaiez, Zs.Dombradi, O.Sorlin, B.A.Brown, M.Belleguic, C.Borcea, C.Bourgeois, Z.Dlouhy, Z.Elekes, Zs.Fulop, S.Grevy, D.Guillemaud-Mueller, G.Hagen, M.Hjorth-Jensen, F.Ibrahim, A.Kerek, A.Krasznahorkay, M.Lewitowicz, S.M.Lukyanov, S.Mandal, P.Mayet, J.Mrazek, F.Negoita, Yu.-E.Penionzhkevich, Zs.Podolyak, P.Roussel-Chomaz, M.G.Saint-Laurent, H.Savajols, G.Sletten, J.Timar, C.Timis, A.Yamamoto Excited states in the neutron-rich nucleus 25F NUCLEAR REACTIONS C(26Ne, 25F), (27Na, 25F), (28Na, 25F), [secondary 26Ne, 27,28Na beams from C(36S, X), E=77.5 MeV/nucleon primary reaction], E=54-65 MeV/nucleon; measured Eγ, Iγ, γγ-, (25F)γ-coin, time-of-flight using SPEG magnetic spectrometer and an array of 74 BaF2 crystals for γ-rays at GANIL facility, GEANT4 simulations. 25F; deduced levels, J, π. Comparison with shell-model calculations, coupled-cluster theory, and other data.
doi: 10.1103/PhysRevC.89.054323
2013EK01 Phys.Rev.Lett. 110, 192502 (2013) A.Ekstrom, G.Baardsen, C.Forssen, G.Hagen, M.Hjorth-Jensen, G.R.Jansen, R.Machleidt, W.Nazarewicz, T.Papenbrock, J.Sarich, S.M.Wild Optimized Chiral Nucleon-Nucleon Interaction at Next-to-Next-to-Leading Order NUCLEAR STRUCTURE 3H, 3,4He, 10B, 17,22,24O, 40,48,50,52,54,56Ca; calculated energy of the first 2+ state, energy per nucleon for neutron matter, phase shifts. The nucleon-nucleon interaction from chiral effective field theory at next-to-next-to-leading order (NNLO).
doi: 10.1103/PhysRevLett.110.192502
2013JA13 Phys.Rev. C 88, 024305 (2013) Spherical coupled-cluster theory for open-shell nuclei NUCLEAR STRUCTURE 6He, 6Li, 18O, 18F, 18Ne; calculated levels, J, π, configuration, center of mass Hamiltonian. Equation-of-motion coupled-cluster formalism with chiral interaction N3LO. Comparison with experimental data.
doi: 10.1103/PhysRevC.88.024305
2013LE03 Phys.Rev.Lett. 110, 082502 (2013) A.Lepailleur, O.Sorlin, L.Caceres, B.Bastin, C.Borcea, R.Borcea, B.A.Brown, L.Gaudefroy, S.Grevy, G.F.Grinyer, G.Hagen, M.Hjorth-Jensen, G.R.Jansen, O.Llidoo, F.Negoita, F.de Oliveira, M.-G.Porquet, F.Rotaru, M.-G.Saint-Laurent, D.Sohler, M.Stanoiu, J.C.Thomas Spectroscopy of 26F to Probe Proton-Neutron Forces Close to the Drip Line RADIOACTIVITY 26F(β-), (β-n) [from Be(36S, X)26F, E=77.6 MeV/nucleon]; measured decay products, Eγ, Iγ; deduced decay scheme, J, π, long-lived isomer T1/2. Comparison with available data.
doi: 10.1103/PhysRevLett.110.082502
2012HA19 Phys.Rev.Lett. 108, 242501 (2012) G.Hagen, M.Hjorth-Jensen, G.R.Jansen, R.Machleidt, T.Papenbrock Continuum Effects and Three-Nucleon Forces in Neutron-Rich Oxygen Isotopes NUCLEAR STRUCTURE 18,22,23,24O; calculated level energies, J, π, point matter and charge radii, 24O long-lived resonances. Chiral effective field interaction, comparison with available data.
doi: 10.1103/PhysRevLett.108.242501
2012HA26 Phys.Rev.Lett. 109, 032502 (2012) G.Hagen, M.Hjorth-Jensen, G.R.Jansen, R.Machleidt, T.Papenbrock Evolution of Shell Structure in Neutron-Rich Calcium Isotopes NUCLEAR STRUCTURE 42,48,50,52,53,54,55,56,61Ca, 50,54,56Ti; calculated ground state energies, J, π. Chiral effective field theory, comparison with available data.
doi: 10.1103/PhysRevLett.109.032502
2011JA06 Phys.Rev. C 83, 054306 (2011) G.R.Jansen, M.Hjorth-Jensen, G.Hagen, T.Papenbrock Toward open-shell nuclei with coupled-cluster theory NUCLEAR STRUCTURE 3,4,5,6He; calculated ground-state energies, first 2+ state energy in 6He, expectation value of total angular Momentum. Method based on equation-of-motion coupled-cluster theory.
doi: 10.1103/PhysRevC.83.054306
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