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Superfluid Phase Transitions in Dense Neutron Matter

V. A. Khodel·J. W. Clark·M. V. Zverev
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Abstract

The phase transitions in a realistic system with triplet pairing, dense neutron matter, have been investigated. The spectrum of phases of the $^3P_2-^3F_2$ model, which adequately describes pairing in this system, is analytically constructed with the aid of a separation method for solving BCS gap equation in states of arbitrary angular momentum. In addition to solutions involving a single value of the magnetic quantum number (and its negative), there exist ten real multicomponent solutions. Five of the corresponding angle-dependent order parameters have nodes, and five do not. In contrast to the case of superfluid $^3$He, transitions occur between phases with nodeless order parameters. The temperature dependence of the competition between the various phases is studied.

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V. A. Khodel, J. W. Clark, M. V. Zverev. 2001-01-20. Superfluid Phase Transitions in Dense Neutron Matter. https://doi.org/10.1103/physrevlett.87.031103

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