Renormalized Field Theory of Infinitely Driven Lattice Gases

TL;DR

This paper develops a renormalized field theory for infinitely driven lattice gases, revealing non-mean-field critical behavior through one-loop calculations and outlining two-loop features.

Contribution

It introduces a novel field theoretic approach to analyze driven lattice gases under infinite drive, providing new critical exponents beyond mean-field theory.

Findings

Critical exponents calculated to one-loop order.

Renormalized theory differs from standard DLG field theory.

Outline of two-loop calculation features.

Abstract

We use field theoretic renormalization group methods to study the critical behavior of a recently proposed Langevin equation for driven lattice gases under infinitely fast drive. We perform an expansion around the upper critical dimension, d_c=4, and obtain the critical exponents to one loop order. The main features of the two loop calculation are then outlined. The renormalized theory is shown to exhibit a behavior different from the standard field theory for the DLG, i.e. it is not mean field like.