Caloric Curves in two and three-dimensional Lennard-Jones-like systems including Long-range forces

TL;DR

This paper investigates how the thermodynamic behavior, specifically negative specific heats, in 2D and 3D Lennard-Jones-like systems depends on potential range, density, and dimension, challenging previous assumptions.

Contribution

It provides a systematic analysis showing the combined influence of potential range, density, and dimension on negative specific heats in Lennard-Jones systems.

Findings

Negative specific heats depend on potential range, density, and dimension.

The relationship is more complex than previously thought.

System dimension influences thermodynamic properties.

Abstract

We present a systematic study of the thermodynamics of two and three-dimensional generalized Lennard-Jones ($LJ$) systems focusing on the relationship between the range of the potential, the system density and its dimension. We found that the existence of negative specific heats depends on these three factors and not only on the potential range and the density of the system as stated in recent contributions.