Universal scaling relations for logarithmic-correction exponents

TL;DR

This paper reviews the development and expansion of scaling relations for logarithmic correction exponents in critical phenomena, highlighting their theoretical foundations and applications across various models.

Contribution

It presents a comprehensive overview of the theories and recent advances in understanding logarithmic corrections to critical scaling laws.

Findings

Established scaling relations for logarithmic exponents

Expanded theoretical frameworks for logarithmic corrections

Reviewed applications across different models

Abstract

By the early 1960's advances in statistical physics had established the existence of universality classes for systems with second-order phase transitions and characterized these by critical exponents which are different to the classical ones. There followed the discovery of (now famous) scaling relations between the power-law critical exponents describing second-order criticality. These scaling relations are of fundamental importance and now form a cornerstone of statistical mechanics. In certain circumstances, such scaling behaviour is modified by multiplicative logarithmic corrections. These are also characterized by critical exponents, analogous to the standard ones. Recently scaling relations between these logarithmic exponents have been established. Here, the theories associated with these advances are presented and expanded and the status of investigations into logarithmic corrections in a variety of models is reviewed.