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Tensor-force effects on nuclear matter in relativistic ab initio theory.
Sci Bull (Beijing)
July 2024
State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China. Electronic address:
Probing the core of the strong nuclear interaction.
Nature
February 2020
Thomas Jefferson National Accelerator Facility, Newport News, VA, USA.
The strong nuclear interaction between nucleons (protons and neutrons) is the effective force that holds the atomic nucleus together. This force stems from fundamental interactions between quarks and gluons (the constituents of nucleons) that are described by the equations of quantum chromodynamics. However, as these equations cannot be solved directly, nuclear interactions are described using simplified models, which are well constrained at typical inter-nucleon distances but not at shorter distances.
View Article and Find Full Text PDFImpact of tensor force on β decay of magic and semimagic nuclei.
Phys Rev Lett
March 2013
Department of Physics, Science, and Technology, Sichuan University, Chengdu 610065, China.
The effect of the tensor force on β decay is studied in the framework of the proton-neutron random phase approximation with the Skyrme force. The investigation is performed for even-even semimagic and magic nuclei, (34)Si, (68,78)Ni, and (132)Sn. The tensor correlation induces strong impact on the low-lying Gamow-Teller state.
View Article and Find Full Text PDFTensor force manifestations in ab initio study of the 2H(d,γ)4He, 2H(d,p)3H, and 2H(d,n)3He reactions.
Phys Rev Lett
September 2011
Division of General Education, Nagaoka National College of Technology, Niigata, Japan.
The (2)H(d,p)(3)H, (2)H(d,n)(3)He, and (2)H(d,γ)(4)He reactions are studied at low energies in a multichannel ab initio model that takes into account the distortions of the nuclei. The internal wave functions of these nuclei are given by the stochastic variational method with the AV8' realistic interaction and a phenomenological three-body force included to reproduce the two-body thresholds. The obtained astrophysical S factors are all in very good agreement with the experiment.
View Article and Find Full Text PDFEffect of the tensor force on the charge exchange spin-dipole excitations of 208Pb.
Phys Rev Lett
August 2010
China Institute of Atomic Energy, 102413 Beijing, China.
The charge exchange spin-dipole (SD) excitations of 208Pb are studied by using a fully self-consistent Skyrme Hartree-Fock plus random phase approximation formalism which includes the tensor interaction. It is found, for the first time, that the tensor correlations have a unique, multipole-dependent effect on the SD excitations; that is, they produce a softening of 1{-} states, but a hardening of 0{-} and 2{-} states. This paves the way to a clear assessment of the strength of the tensor terms.
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