The Quench Action

By J. Caux. 2016

184 citations recorded by the source corpus.

We give a pedagogical introduction to the methodology of the Quench Action, which is an effective representation for the calculation of time-dependent expectation values of physical operators following a generic out-of-equilibrium state preparation protocol (for example a quantum quench). The representation, originally introduced in Caux and Essler (2013 Phys. Rev. Lett. 110 257203), is founded on a mixture of exact data for overlaps together with variational reasonings. It is argued to be quite generally valid and thermodynamically exact for arbitrary times after the quench (from short times all the way up to the steady state), and applicable to a wide class of physically relevant observables. Here, we introduce the method and its language, give an overview of some recent results, suggest a roadmap and offer some perspectives on possible future research directions.

Subfields: Atomic and Molecular Physics, and Optics, Statistical and Nonlinear Physics

View Paper: https://www.semanticscholar.org/paper/69473b96ceacbeb3e923ab1d29e1966fcceaad21

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Atomic and Molecular Physics, and Optics

In Statistical and Nonlinear Physics

Citations in the corpus

Generalized Gibbs ensemble in integrable lattice models (2016, methodology): “We note that related ideas have been discussed in the context of the so-called quench-action method [67, 68, 69, 113, 114] (see also the review by Caux in this volume [115]).”
Entanglement dynamics after quantum quenches in generic integrable systems (2017, methodology): “This is in principle calculable by Bethe ansatz techniques from the overlaps of the initial state with the Bethe states [113,114] or equivalently from the GGE [56].”
Prethermalization and Thermalization in Isolated Quantum Systems (2018, background): “[20] J.”
Quench dynamics and relaxation in isolated integrable quantum spin chains (2016, methodology): “218 J.-S. Caux, The Quench Action, arXiv:1603.04689 (2016).”