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Isospin Lattice Gas Model and Nuclear-Matter Phase Diagram and Pressure-Volume Isotherms

T. T. S. Kuo·S. Ray·J. Shamanna·R. K. Su
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Abstract

We study a cubic lattice gas model for nuclear matter where each lattice site can be either occupied, by one proton or one neutron, or unoccupied. A nearest-neighbor interaction of the form $ - \sum_{ } J_{ij}τ_{zi} τ_{zj}$ is assumed. Our model is an isospin-1 Ising model, with ${τ_z}$ = (1,0,-1) representing respectively (proton, vacancy, neutron). A kinetic-energy term has been included in our model. Under the Bragg-Williams mean field approximation our model exhibits the existence of a dense phase (liquid-like) and a rare phase (gas-like). The nuclear-matter p-v isotherms given by our model are discussed.

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T. T. S. Kuo, S. Ray, J. Shamanna, R. K. Su. 1995-05-17. Isospin Lattice Gas Model and Nuclear-Matter Phase Diagram and Pressure-Volume Isotherms. https://doi.org/10.1142/s021830139600013x

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