Study of Nematic Isotropic Transition

TL;DR

This paper presents a high-accuracy Monte Carlo study of the nematic-isotropic transition in a modified Lebwohl Lasher model, revealing a weakly first-order phase transition through extensive simulations of thermodynamic properties.

Contribution

It introduces a modified Lebwohl Lasher model with higher-order interactions and provides detailed Monte Carlo analysis of the phase transition characteristics.

Findings

Weakly first-order nematic-isotropic transition observed

Transition temperature estimated from simulations

Thermodynamic properties analyzed near transition point

Abstract

High accuracy Monte Carlo study has been performed in the modified planar Lebwohl Lasher model containing and interaction, where and are second and fourth order Legendre polynomial having three-dimensional spin. Weakly First order Nematic to Isotropic phase transition is observed using this model. Extensive Monte Carlo simulations using Wolff algorithm are performed to investigate the average energy, order parameter, ordering susceptibility, entropy and specific heat near phase transition. Transition temperature is also estimated.