Angel Ramelli, Juan Fernando; Berthiere, C.; Giangreco Puletti, Valentina; Thorlacius, Larus
(Springer Science and Business Media LLC, 2020-09)
We investigate quantum entanglement in a non-relativistic critical system by calculating the logarithmic negativity of a class of mixed states in the quantum Lifshitz model in one and two spatial dimensions. In 1+1 dimensions we employ a correlator ...