Stationary behaviour of observables after a quantum quench in the spin-1/2 Heisenberg XXZ chain
Maurizio FagottiThe Rudolf Peierls Centre for Theoretical Physics, Oxford University, Oxford OX1 3NP, UKFabian H L EsslerThe Rudolf Peierls Centre for Theoretical Physics, Oxford University, Oxford OX1 3NP, UK
2013en
ABI
Аннотация
We consider a quantum quench in the spin-1/2 Heisenberg XXZ chain. At late times after the quench it is believed that the expectation values of local operators approach time-independent values, that are described by a generalized Gibbs ensemble. Employing a quantum transfer matrix approach we show how to determine short-range correlation functions in such generalized Gibbs ensembles for a class of initial states.
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