Effects of strong magnetic fields on neutron $^{3}P_{2}$ superfluidity with spin-orbit interactions
Abstract
We discuss neutron phases in the core of neutron stars in strong magnetic field (magnetars). The neutron pairing provides a wide variety of condensates, such as the uniaxial nematic and (D and D) biaxial nematic, with different symmetries stemming from the combinations of spin and momentum. Based on the spin-orbital angular momentum coupling and the spin-magnetic field coupling of the neutrons, we derive the Ginzburg-Landau equation containing higher order terms of the magnetic field. We investigate the phase diagram of the neutron superfluidity, and find that the D biaxial nematic phase is extended by the higher order terms of the magnetic field. We also discuss the thermodynamic properties, the heat capacity and the spin susceptibility.
Keywords
Cite
@article{arxiv.1902.00674,
title = {Effects of strong magnetic fields on neutron $^{3}P_{2}$ superfluidity with spin-orbit interactions},
author = {Shigehiro Yasui and Chandrasekhar Chatterjee and Muneto Nitta},
journal= {arXiv preprint arXiv:1902.00674},
year = {2020}
}
Comments
Prepared for proceedings of QNP-2018, "The 8th International Conference on Quarks and Nuclear Physics" to be published in JPS Conf. Proc. Based on the original paper arXiv:1810.04901 [nucl-th]