九大原子核セミナー

2020年6月26日(金) 15:00〜

講師：Ying Zhang 氏 (天津大学)
演題：A simple quantum many-body system – neutron drop
場所：※オンラインセミナー

概要(Abstract)：A neutron drop is a system composed only of neutrons trapped by artificial external fields [1]. This simple system can be easily calculated by both the ab initio approach and energy-density functional theory. Therefore, the ab initio solutions for a neutron drop can be used as pseudo-data to calibrate and improve the effective Hamiltonians and density functionals in nuclear physics [2,3]. In this seminar, I will introduce our investigation on neutron drop by using the energy- density functional theories, including the following aspects: the origin of the spin- orbit and pseudospin-orbit splittings ’evolution in neutron drop; the pairing [4] and the deformation effects on the neutron drop.

[1] B. S. Pudliner, A. Smerzi, J. Carlson, V. R. Pandharipande, S. C. Pieper, D. G. Ravenhall, Neutron drops and skyrme energy-density functionals, Phys. Rev. Lett. 76 (1996) 2416-2419.
[2] S. Gandolfi, J. Carlson, S. C. Pieper, Cold neutrons trapped in external elds, Phys. Rev. Lett. 106 (2011) 012501.
[3] S. K. Bogner, R. J. Furnstahl, H. Hergert, M. Kortelainen, P. Maris, M. Stoitsov, J. P. Vary, Testing the density matrix expansion against ab initio calcu-
lations of trapped neutron drops, Phys. Rev. C 84 (2011) 044306.
[4] Y. H. Ge, Y. Zhang, J. N. Hu, Effects of pairing correlation on neutron drop, Sci. China Physics, Mech. Astron. 63 (2020) 242011.