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Mean Field Calculation of Thermal Properties of Simple Nucleon Matter on a Lattice

T. Abe·R. Seki·A. N. Kocharian
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Abstract

Thermal properties of single species nucleon matter are investigated assuming a simple form of the nucleon-nucleon interaction. The nucleons are placed on a cubic lattice, hopping from site to site and interacting through a spin-dependent force, as in the extended, attractive Hubbard model. A mean field calculation in the Hartree-Fock Bogoliubov approximation suggests that the superfluid ground state generated by strong nucleon pairing undergoes a second-order phase transition to a normal state as the temperature increases. The calculation is shown to lead to a promising description of the thermal properties of low-density neutron matter. A possibility of a density wave phase is also examined.

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T. Abe, R. Seki, A. N. Kocharian. 2004-07-19. Mean Field Calculation of Thermal Properties of Simple Nucleon Matter on a Lattice. https://doi.org/10.1103/physrevc.70.014315%2010.1103%2Fphysrevc.71.059902

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