Finite-time quantum quenches in the XXZ Heisenberg chain

Benedikt Schoenauer; Dirk Schuricht

doi:10.1103/PhysRevB.100.115418

Finite-time quantum quenches in the XXZ Heisenberg chain

Benedikt Schoenauer, Dirk Schuricht

Research output: Contribution to journal › Article › Academic › peer-review

Abstract

We study the time evolution of the two-point correlation functions in the XXZ Heisenberg chain after a finite-time quantum quench in the anisotropy. We compare results from numerical simulations to ones obtained in the Luttinger model and find good agreement. We analyze the spreading of the correlations and the associated light-cone features. We observe a delay in the appearance of the light cone as compared to the sudden-quench setup, and link this delay to the properties of the quench protocol.

Original language	English
Article number	115418
Journal	Physical Review B
Volume	100
Issue number	11
DOIs	https://doi.org/10.1103/PhysRevB.100.115418
Publication status	Published - 12 Sept 2019

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abstract = "We study the time evolution of the two-point correlation functions in the XXZ Heisenberg chain after a finite-time quantum quench in the anisotropy. We compare results from numerical simulations to ones obtained in the Luttinger model and find good agreement. We analyze the spreading of the correlations and the associated light-cone features. We observe a delay in the appearance of the light cone as compared to the sudden-quench setup, and link this delay to the properties of the quench protocol.",

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Finite-time quantum quenches in the XXZ Heisenberg chain

Abstract

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