Critical-like behavior in a lattice gas model

TL;DR

This paper demonstrates that a lattice gas model can replicate critical-like features observed in nuclear multifragmentation data, indicating fragment formation near normal nuclear densities or in the liquid-gas coexistence region.

Contribution

It shows that the lattice gas model can reproduce critical behavior features at different densities, extending previous bond percolation model results.

Findings

Bond percolation model reproduces critical features in data.

Lattice gas model matches data at normal densities.

Good reproduction at lower densities in coexistence region.

Abstract

ALADIN multifragmentation data show features characteristic of a critical behavior, which are very well reproduced by a bond percolation model. This suggests, in the context of the lattice gas model, that fragments are formed at nearly normal nuclear densities and temperatures corresponding to the Kertesz line. Calculations performed with a lattice gas model have shown that similarly good reproduction of the data can also be achieved at lower densities, particularly in the liquid-gas coexistence region.