2003/12/31 by T. Abe, R. Seki, Armen Kocharian +1 · 13 citations
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Condensed matter physics #Ground state #Lattice (music) #Mean field theory #Neutron #Nuclear matter #Nuclear physics #Nucleon #Pairing #Phase transition #Physics #Pulsars and Gravitational Waves Research #Quantum mechanics #Quantum, superfluid, helium dynamics #Superconductivity #Superfluidity #Thermal #Thermodynamics #nucl-th
paper · pdf · doi:10.1103/physrevc.70.014315
published in Physical Review C 70(1) (American Institute of Physics) · 30 pages, 8 figures, to appear in Physical Review C
arxiv created 2004/07/19 · openalex publication_date 2004/07/26 · arxiv updated 2014/11/18 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/21
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.