Isospin lattice gas model and nuclear matter phase diagram and pressure - volume isotherms - INSPIRE

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Isospin lattice gas model and nuclear matter phase diagram and pressure - volume isotherms

May, 1995

11 pages

Published in:

Int.J.Mod.Phys.E 5 (1996) 303-312

e-Print:

nucl-th/9505025 [nucl-th]

DOI:

10.1142/S021830139600013X

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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_{<ij>} J_{ij}\tau_{zi} \tau_{zj}

is assumed. Our model is an isospin-1 Ising model, with

{\tau_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.

Note:

12 pages, LaTeX, 3 figures are available on request at kuo@nuclear.physics.sunysb.edu; to be published in IJMPE

References(14)

Figures(0)

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