Exploring P03 superfluid in dilute spin-polarized neutron matter

作     者：Hiroyuki Tajima Hiroshi Funaki Yuta Sekino Nobutoshi Yasutake Mamoru Matsuo 

作者机构：Department of Physics Graduate School of Science The University of Tokyo Tokyo 113-0033 Japan RIKEN Nishina Center Wako 351-0198 Japan Kavli Institute for Theoretical Sciences University of Chinese Academy of Sciences Beijing 100190 China RIKEN Cluster for Pioneering Research (CPR) Astrophysical Big Bang Laboratory (ABBL) Wako Saitama 351-0198 Japan Interdisciplinary Theoretical and Mathematical Sciences Program (iTHEMS) RIKEN Wako Saitama 351-0198 Japan Nonequilibrium Quantum Statistical Mechanics RIKEN Hakubi Research Team RIKEN Cluster for Pioneering Research (CPR) RIKEN iTHEMS Wako Saitama 351-0198 Japan Department of Physics Chiba Institute of Technology (CIT) 2-1-1 Shibazono Narashino Chiba 275-0023 Japan Advanced Science Research Center Japan Atomic Energy Agency Tokai 319-1195 Japan CAS Center for Excellence in Topological Quantum Computation University of Chinese Academy of Sciences Beijing 100190 China RIKEN Center for Emergent Matter Science (CEMS) Wako Saitama 351-0198 Japan 

出 版 物：《Physical Review C》 (物理学评论C辑：核物理学)

年 卷 期：2023年第108卷第5期

页      面：L052802-L052802页

学科分类：07[理学] 070202[理学-粒子物理与原子核物理] 0702[理学-物理学] 

基　　金：Japan Society for the Promotion of Science, JSPS, (18H05406, 20K03951, 21H01800, 21H04565, 22H01158, 22K13981, 23H01839) RIKEN r-EMU 

主　　题：Nuclear astrophysics Nuclear matter in neutron stars Spin polarization Spin-triplet pairing p-wave Superfluids 

摘      要：We explore the theoretical possibility of P03 neutron superfluid in dilute spin-polarized neutron matter, which may be relevant to the crust region of a magnetized neutron star. In such a dilute regime where the neutron Fermi energy is less than 1 MeV, the S01 neutron superfluid can be suppressed by a strong magnetic field of the compact star. In the low-energy limit relevant for dilute neutron matter, the P03 interaction is stronger than the P23 one which is believed to induce the triplet superfluid in the core. We present the ground-state phase diagram of dilute neutron matter with respect to the magnetic field and numerically estimate the critical temperature of the P03 neutron superfluid, which is found to exceed 107 K.