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Trapped Ion Quantum Computing

Dynamics of Thermal Effects in the Spin-Wave Theory of Quantum Antiferromagnets

arXiv

Authors: Ángel Rivas, Miguel A. Martin-Delgado

Year

2011

Paper ID

29232

Status

Preprint

Abstract Read

~2 min

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Abstract

We derive a master equation that allows us to study non-equilibrium dynamics of a quantum antiferromagnet. By resorting to spin-wave theory, we obtain a closed analytic form for the magnon decay rates. These turn out to be closely related to form factors, which are experimentally accessible by means of neutron and Raman scattering. Furthermore, we compute the time evolution of the staggered magnetization showing that, for moderate temperatures, the magnetic order is not spoiled even if the coupling is fully isotropic.

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We derive a master equation that allows us to study non-equilibrium dynamics of a quantum antiferromagnet.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1112.3158 [2] arXiv https://arxiv.org/abs/1112.3158 [3] Publisher https://arxiv.org/abs/1112.3158

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