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arXiv · 1308.4551

Infinite-time Average of Local Fields in an Integrable Quantum Field Theory after a Quantum Quench

Giuseppe Mussardo
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Abstract

The infinite-time average of the expectation values of local fields of any interacting quantum theory after a global quench process are key quantities for matching theoretical and experimental results. For quantum integrable field theories, we show that they can be obtained by an ensemble average that employs a particular limit of the Form Factors of local fields and quantities extracted by the Generalized Bethe Ansatz.

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Giuseppe Mussardo. 2013-08-21. Infinite-time Average of Local Fields in an Integrable Quantum Field Theory after a Quantum Quench. https://doi.org/10.1103/physrevlett.111.100401

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