Cluster Entanglement Mean Field inspired approach to Criticality in Classical Systems

Sen(De), Aditi ; Sen, Ujjwal (2013) Cluster Entanglement Mean Field inspired approach to Criticality in Classical Systems Physics Letters A, 377 (31-33). pp. 1832-1836. ISSN 0031-899X (print); 1536-6065 (web)

[img] PDF
128kB

Official URL: https://doi.org/10.1016%2Fj.physleta.2013.05.024

Abstract

We propose an entanglement mean field theory inspired approach for dealing with interacting classical many-body systems. It involves a coarse-graining technique that terminates a step before the mean field theory: While mean field theory deals with only single-body physical parameters, the entanglement mean field theory deals with single- as well as two-body ones. We improve the theory to a cluster entanglement mean field, that deals with a fundamental unit of the lattice of the many-body system. We apply these methods to interacting Ising spin systems in several lattice geometries and dimensions, and show that the predictions of the onset of criticality of these models are much better in the proposed theories as compared to the corresponding ones in mean field theories.

Item Type:Article
ID Code:125849
Deposited On:12 Oct 2022 11:41
Last Modified:12 Oct 2022 11:41

Repository Staff Only: item control page