We study the dynamics of a quantum Ising chain after the sudden introduction of a nonintegrable long-range interaction. Via an exact mapping onto a fully connected lattice of hard-core bosons, we show that a prethermal state emerges and we investigate its features by focusing on a class of physically relevant observables. In order to gain insight into the eventual thermalization, we outline a diagrammatic approach which complements the study of the previous quasistationary state and provides the basis for a self-consistent solution of the kinetic equation. This analysis suggests that both the temporal decay towards the prethermal state and the crossover to the eventual thermal one may occur algebraically.
Titolo: | Prethermalization in a Nonintegrable Quantum Spin Chain after a Quench |
Autori: | Marcuzzi, M; Marino, J; Gambassi, A; Silva, A |
Rivista: | |
Data di pubblicazione: | 2013 |
Volume: | 111 |
Fascicolo: | 19 |
Pagina iniziale: | 1 |
Pagina finale: | 5 |
Numero di Articolo: | 197203 |
Digital Object Identifier (DOI): | 10.1103/PhysRevLett.111.197203 |
URL: | http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.111.197203 https://arxiv.org/abs/1307.3738 |
Appare nelle tipologie: | 1.1 Journal article |
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