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Universal entanglement spectra in critical spin chains

Rex Lundgren, Jonathan Blair, Pontus Laurell, Nicolas Regnault, Gregory A. Fiete, Martin Greiter, and Ronny Thomale
Phys. Rev. B 94, 081112(R) – Published 26 August 2016

Abstract

We advocate that in critical spin chains, and possibly in a larger class of one-dimensional critical models, a gap in the momentum-space entanglement spectrum separates the universal part of the spectrum, which is determined by the associated conformal field theory, from the nonuniversal part, which is specific to the model. To this end, we provide affirmative evidence from multicritical spin chains with low-energy sectors described by the SU(2)2 or the SU(3)1 Wess-Zumino-Witten model.

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  • Figure
  • Received 11 January 2016
  • Revised 4 August 2016

DOI:https://doi.org/10.1103/PhysRevB.94.081112

©2016 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

Rex Lundgren1, Jonathan Blair1, Pontus Laurell1, Nicolas Regnault2,3, Gregory A. Fiete1, Martin Greiter4, and Ronny Thomale4

  • 1Department of Physics, The University of Texas at Austin, Austin, Texas 78712, USA
  • 2Department of Physics, Princeton University, Princeton, New Jersey 08544, USA
  • 3Laboratoire Pierre Aigrain, Ecole Normale Supérieure-PSL Research University, Centre National de la Recherche Scientifique, Université Pierre et Marie Curie-Sorbonne Universités, Université Paris Diderot-Sorbonne Paris Cité, 24 rue Lhomond, 75231 Paris Cedex 05, France
  • 4Institute for Theoretical Physics, University of Würzburg, D-97074 Würzburg, Germany

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Issue

Vol. 94, Iss. 8 — 15 August 2016

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