Symmetry-prohibited thermalization after a quantum quench

Reimann P (2021)
Journal of Statistical Mechanics: Theory and Experiment 2021(10): 103106.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Abstract / Bemerkung
The observable long-time behavior of an isolated many-body system after a quantum quench is considered, i.e. an eigenstate (or an equilibrium ensemble) of some pre-quench Hamiltonian H serves as initial condition which then evolves in time according to some post-quench Hamiltonian H ( p ). Absence of thermalization is analytically demonstrated for a large class of quite common pre- and post-quench spin Hamiltonians. The main requirement is that the pre-quench Hamiltonian must exhibit a Z (2) (spin-flip) symmetry, which would be spontaneously broken in the thermodynamic limit, though we actually focus on finite (but large) systems. On the other hand, the post-quench Hamiltonian must violate the Z (2) symmetry, but for the rest may be non-integrable and may obey the eigenstate thermalization hypothesis for (sums of) few-body observables.
Stichworte
quantum thermalization; quantum quenches
Erscheinungsjahr
2021
Zeitschriftentitel
Journal of Statistical Mechanics: Theory and Experiment
Band
2021
Ausgabe
10
Art.-Nr.
103106
eISSN
1742-5468
Page URI
https://pub.uni-bielefeld.de/record/2959479

Zitieren

Reimann P. Symmetry-prohibited thermalization after a quantum quench. Journal of Statistical Mechanics: Theory and Experiment . 2021;2021(10): 103106.
Reimann, P. (2021). Symmetry-prohibited thermalization after a quantum quench. Journal of Statistical Mechanics: Theory and Experiment , 2021(10), 103106. https://doi.org/10.1088/1742-5468/ac2a9c
Reimann, P. (2021). Symmetry-prohibited thermalization after a quantum quench. Journal of Statistical Mechanics: Theory and Experiment 2021:103106.
Reimann, P., 2021. Symmetry-prohibited thermalization after a quantum quench. Journal of Statistical Mechanics: Theory and Experiment , 2021(10): 103106.
P. Reimann, “Symmetry-prohibited thermalization after a quantum quench”, Journal of Statistical Mechanics: Theory and Experiment , vol. 2021, 2021, : 103106.
Reimann, P.: Symmetry-prohibited thermalization after a quantum quench. Journal of Statistical Mechanics: Theory and Experiment . 2021, : 103106 (2021).
Reimann, Peter. “Symmetry-prohibited thermalization after a quantum quench”. Journal of Statistical Mechanics: Theory and Experiment 2021.10 (2021): 103106.

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