Exploring ^3P_0 Superfluid in Dilute Spin-Polarized Neutron Matter
arXiv (Cornell University)(2023)
摘要
We explore the theoretical possibility of ^3P_0 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 ^1S_0 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 ^3P_0 interaction is stronger than the ^3P_2
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 ^3P_0
neutron superfluid, which is found to exceed 10^7 K.
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关键词
superfluid,neutron,spin-polarized
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