ICTON Mediterranean Winter Conference (ICTON-MW)
Non-Markovian master equation for the XX central spin model
Elena Ferraro, Heinz‐Peter Breuer, Anna Napoli, M. Guccione, ANTONINO MESSINA
Abstract
The non-Markovian correlated projection operator technique is applied to the model of a central spin coupled to a spin bath through non uniform XX Heisenberg coupling. The second order results of the Nakajima-Zwanzig and of the time-convolutionless methods are compared with the exact solution considering a fully polarized initial bath state.