Finite temperature results on the 2d Ising model with mixed perturbation

TL;DR

This paper numerically investigates the finite temperature behavior of the 2d Ising model with a non-integrable perturbation, confirming the applicability of Finite Size Scaling analysis beyond integrable cases.

Contribution

It demonstrates that Finite Size Scaling analysis remains valid for the non-integrable perturbation of the 2d Ising model at finite temperature.

Findings

Finite temperature thermodynamical observables are studied numerically.

Finite Size Scaling analysis is supported in the non-integrable case.

Results extend the applicability of conformal field theory techniques.

Abstract

A numerical study of finite temperature features of thermodynamical observables is performed for the lattice 2d Ising model. Our results support the conjecture that the Finite Size Scaling analysis employed in the study of integrable perturbation of Conformal Field Theory is still valid in the present case, where a non-integrable perturbation is considered.