Universal critical exponents of nonequilibrium phase transitions from holography

We study the critical exponents in the universal scaling laws of a holographic nonequilibrium steady state near its critical point of phase transition, which is driven by an ac electric field sitting in the boundary of the bulk. The applied electric field drives the initial superconducting state into a nonequilibrium steady state with vanishing condensate as its amplitude is greater than a critical value. In the vicinity of the nonequilibrium critical point, we numerically calculate the six static and one dynamical critical exponents, and find that they have similar values to those in equilibrium systems within numerical errors.