Entanglement over the rainbow

DOI10.1088/1742-5468/2015/06/P06002zbMATH Open1456.81089arXiv1503.02695OpenAlexW3098140532MaRDI QIDQ3302276

Author name not available (Why is that?)

Publication date: 11 August 2020

Published in: (Search for Journal in Brave)

Abstract: In one dimension the area law for the entanglement entropy is violated maximally by the ground state of a strong inhomogeneous spin chain, the so called concentric singlet phase (CSP), that looks like a rainbow connecting the two halves of the chain. In this paper we show that, in the weak inhomogeneity limit, the rainbow state is a thermofield double of a conformal field theory with a temperature proportional to the inhomogeneity parameter. This result suggests some relation of the CSP with black holes. Finally, we propose an extension of the model to higher dimensions.

Full work available at URL: https://arxiv.org/abs/1503.02695

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