Out-of-time-order correlators and quantum phase transitions in the Rabi and Dicke model

Zheng-Hang Sun, Jia-Qi Cai, Qi-Cheng Tang +2

The out-of-time-order correlators (OTOCs) is used to study the quantum phase transitions (QPTs) between the normal phase and the superradiant phase in the Rabi and few-body Dicke m…