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Entanglement in 3D Kitaev spin liquids

Journal article
Authors S. Matern
Maria Hermanns
Published in Journal of Statistical Mechanics-Theory and Experiment
Pages 063101
ISSN 1742-5468
Publication year 2018
Published at Department of Physics (GU)
Pages 063101
Language en
Links https://doi.org/10.1088/1742-5468/a...
Keywords entanglement in topological phase, spin liquids, model, particles, states, Mechanics, Physics
Subject categories Physical Sciences, Statistical mechanics

Abstract

Quantum spin liquids are highly fascinating quantum liquids in which the spin degrees of freedom fractionalize. An interesting class of spin liquids axe the exactly solvable, three-dimensional Kitaev spin liquids. Their fractionalized excitations are Majonara fermions, which may exhibit a variety of topological band structures-ranging from topologically protected Weyl semimetals over nodal semi-metals to systems with Majorana Fermi surfaces. We study the entanglement spectrum of such Kitaev spin liquids and verify that it is closely related to the topologically protected edge spectrum. Moreover, we find that in some cases the entanglement spectrum contains even more information about the topological features than the surface spectrum, and thus provides a simple and reliable tool to probe the topology of a system.

Page Manager: Webmaster|Last update: 9/11/2012
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