---

We investigate phase transitions in rapidly periodically driven, open quantum systems within a complex bosonic order parameter model with phase rotation symmetric drive. The infinitely rapidly driven limit is effectively stationary and exhibits a second order phase transition. Based on a Floquet renormalization group analysis, we reveal a universal mechanism showing that fluctuations associated to the first rotating wave correction mask the critical physics associated with the equilibrium fixed point. The critical exponents of the infinitely rapidly driven fixed point can be probed upon smoothly approaching it, in some analogy to the opposite limit of slowly driven systems within the Kibble-Zurek mechanism.

---

Steven Mathey
Seminar Room 0.03, ETP
Contact: not specified