Entanglement dynamics of thermofield double states in integrable models
Entanglement dynamics of thermofield double states in integrable models
We study the entanglement dynamics of thermofield double (TFD) states in integrable spin chains and quantum field theories. We show that, for a natural choice of the Hamiltonian eigenbasis, the TFD evolution may be interpreted as a quantum quench from an initial state which is low-entangled in the real-space representation …