S. Ray et al., ISOSPIN LATTICE-GAS MODEL AND LIQUID-GAS PHASE-TRANSITION IN ASYMMETRIC NUCLEAR-MATTER, Physics letters. Section B, 392(1-2), 1997, pp. 7-12
Liquid-gas phase transition in asymmetric nuclear matter is investigat
ed with an isospin lattice gas model. Nuclear matter is considered as
a lattice with each lattice site either empty or occupied by a proton
or a neutron, with a nearest-neighbor interaction between the nucleons
. The Bragg-Williams mean field approximation is employed to evaluate
the thermodynamic potential. Our model exhibits liquid-gas phase trans
ition below a critical temperature.