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arXiv · 2201.06894

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

Masataka Matsumoto·Shin Nakamura
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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.

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Masataka Matsumoto, Shin Nakamura. 2022-01-18. Current-induced inverse symmetry breaking and asymmetric critical phenomena at current-driven tricritical point. https://doi.org/10.1103/physrevd.106.026006

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