Critical Dynamics of Superconductors in the Charged Regime

TL;DR

This paper explores the critical dynamics of three-dimensional superconductors with gauge field coupling, revealing a new universality class with measurable signatures and universal amplitude ratios.

Contribution

It introduces a novel dynamic universality class for superconductors in the charged regime using a dynamical renormalization group analysis.

Findings

Identification of a new dynamic universality class.

Existence of a universal amplitude ratio.

Signatures in measurable physical quantities.

Abstract

We investigate the finite temperature critical dynamics of three-dimensional superconductors in the charged regime, described by a transverse gauge field coupling to the superconducting order parameter. Assuming relaxational dynamics for both the order parameter and the gauge fields, within a dynamical renormalization group scheme, we find a new dynamic universality class characterized by a finite fixed point ratio between the transport co-efficients associated with the order parameter and gauge fields, respectively. We find signatures of this universality class in various measurable physical quantities, and in the existence of a universal amplitude ratio formed by a combination of physical quantities.