Research Repository

See what's under the surface


Discrete time crystals in the absence of manifest symmetries or disorder in open quantum systems (2019)
Journal Article
Gambetta, F., Carollo, F., Marcuzzi, M., Garrahan, J., & Lesanovsky, I. (2019). Discrete time crystals in the absence of manifest symmetries or disorder in open quantum systems. Physical Review Letters, 122(1), doi:10.1103/physrevlett.122.015701

We establish a link between metastability and a discrete time-crystalline phase in a periodically driven open quantum system. The mechanism we highlight requires neither the system to display any microscopic symmetry nor the presence of disorder, but... Read More

Effective metal-insulator nonequilibrium quantum phase transition in the Su-Schrieffer-Heeger model (2018)
Journal Article
Porta, S., Ziani, N. T., Kennes, D. M., Gambetta, F. M., Sassetti, M., & Cavaliere, F. (2018). Effective metal-insulator nonequilibrium quantum phase transition in the Su-Schrieffer-Heeger model. Physical Review B, 98(21), doi:10.1103/physrevb.98.214306

We consider the steady-state behavior of observables in the Su-Schrieffer-Heeger (SSH) model and in the one-dimensional transverse field quantum Ising model after a sudden quantum quench of the parameter controlling the gap. In the thermodynamic limi... Read More