论文标题
电流引起的反对称性断裂和在电流驱动的三临界点处的不对称临界现象
Current-induced inverse symmetry breaking and asymmetric critical phenomena at current-driven tricritical point
论文作者
论文摘要
我们研究了通过使用全息图在电流驱动的非平衡稳态中自发性手性对称性破坏相关的关键现象。我们发现，在三个智力点处的临界指数$（γ，ν）$在手性对称性恢复相位与破碎相之间是不对称的。它们在破碎相中的值不同于平均场理论的值，而其他关键指数是平均场值。相对于温度和电流密度显示的相图显示了重点结构：在存在电流密度的情况下，在低温下再次恢复了手性对称性。
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 $(γ, ν)$ 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.
