Quantum quenches in 1+1 dimensional conformal field theories
Pasquale Calabrese, John Cardy
TL;DR
This paper reviews the imaginary time path integral method for analyzing quench dynamics in 1+1 dimensional conformal field theories, focusing on correlation functions and entanglement entropy for various quench protocols.
Contribution
It systematically applies the imaginary time path integral approach to compute dynamical quantities in conformal field theories after quenches, clarifying its scope and limitations.
Findings
Effective calculation of correlation functions post-quench
Analysis of entanglement entropy evolution
Discussion of applicability to condensed matter and cold atom systems
Abstract
We review the imaginary time path integral approach to the quench dynamics of conformal field theories. We show how this technique can be applied to the determination of the time dependence of correlation functions and entanglement entropy for both global and local quenches. We also briefly review other quench protocols. We carefully discuss the limits of applicability of these results to realistic models of condensed matter and cold atoms.
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