Current-induced inverse symmetry breaking and asymmetric critical phenomena at current-driven tricritical point

Abstract

We study critical phenomena associated with a spontaneous chiral symmetry breaking in current-driven non-equilibrium steady states by using holography. We find that the critical exponents $(\gamma ,\nu )$ at the tricritical point are asymmetric between the chiral symmetry restored phase and the broken phase. Their values in the broken phase are different from those of the mean-field theory, whereas other critical exponents are the mean-field values. The phase diagram with respect to temperature and current density shows a re-entrant structure: the broken chiral symmetry is restored again at low temperatures in the presence of current density.

arXiv commentv1: 10 pages, 8 figures; v2: 9 pages, 8 figures, version published in PRD

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• A Consistent Holographic Analysis of Anomaly-induced Charge Transport in the D3/D7 Model
• Dynamical Stability and Critical Exponents of the Neutral (S-type) Gubser-Rocha Model with Momentum Dissipation