Decoherence and relaxation of topological states in extended quantum Ising models

Weisbrich, Hannes; Belzig, Wolfgang; Rastelli, Gianluca

doi:10.21468/SciPostPhys.6.3.037

SciPost Physics

Decoherence and relaxation of topological states in extended quantum Ising models

Hannes Weisbrich, Wolfgang Belzig, Gianluca Rastelli

SciPost Phys. 6, 037 (2019) · published 26 March 2019

doi: 10.21468/SciPostPhys.6.3.037
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Abstract

We study the decoherence and the relaxation dynamics of topological states in an extended class of quantum Ising chains which can present a manyfold ground state subspace. The leading interaction of the spins with the environment is assumed to be the local fluctuations of the transverse magnetic field. By deriving the Lindblad equation using the many-body states, we investigate the relation between decoherence, energy relaxation and topology. In particular, in the topological phase and at low temperature, we analyze the dephasing rates between the different degenerate ground states.

TY  - JOUR
PB  - SciPost Foundation
DO  - 10.21468/SciPostPhys.6.3.037
TI  - Decoherence and relaxation of topological states in extended quantum Ising models
PY  - 2019/03/26
UR  - https://www.scipost.org/SciPostPhys.6.3.037
JF  - SciPost Physics
JA  - SciPost Phys.
VL  - 6
IS  - 3
SP  - 037
A1  - Weisbrich, Hannes
AU  - Belzig, Wolfgang
AU  - Rastelli, Gianluca
AB  - We study the decoherence and the relaxation dynamics of topological states in an extended class of quantum Ising chains which can present a manyfold ground state subspace. The leading interaction of the spins with the environment is assumed to be the local fluctuations of the transverse magnetic field. By deriving the Lindblad equation using the many-body states, we investigate the relation between decoherence, energy relaxation and topology. In particular, in the topological phase and at low temperature, we analyze the dephasing rates between the different degenerate ground states.
ER  -

@Article{10.21468/SciPostPhys.6.3.037,
	title={{Decoherence and relaxation of topological states in extended quantum Ising models}},
	author={Hannes Weisbrich and Wolfgang Belzig and Gianluca Rastelli},
	journal={SciPost Phys.},
	volume={6},
	pages={037},
	year={2019},
	publisher={SciPost},
	doi={10.21468/SciPostPhys.6.3.037},
	url={https://scipost.org/10.21468/SciPostPhys.6.3.037},
}

Cited by 4

Ontology / Topics

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Decoherence Ising model Lindblad master equations Quantum many-body systems Relaxation dynamics

Authors / Affiliation: mappings to Contributors and Organizations

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¹ Universität Konstanz / University of Konstanz

Funders for the research work leading to this publication