Finite-temperature critical behavior of mutual information.


Journal Article

We study mutual information for Renyi entropy of arbitrary index n, in interacting quantum systems at finite-temperature critical points, using high-temperature expansion, quantum Monte Carlo simulations and scaling theory. We find that, for n>1, the critical behavior is manifest at two temperatures T(c) and nT(c). For the XXZ model with Ising anisotropy, the coefficient of the area law has a t lnt singularity, whereas the subleading correction from corners has a logarithmic divergence, with a coefficient related to the exact results of Cardy and Peschel. For T

Full Text

Cited Authors

  • Singh, RRP; Hastings, MB; Kallin, AB; Melko, RG

Published Date

  • April 2011

Published In

Volume / Issue

  • 106 / 13

Start / End Page

  • 135701 -

PubMed ID

  • 21517397

Pubmed Central ID

  • 21517397

Electronic International Standard Serial Number (EISSN)

  • 1079-7114

International Standard Serial Number (ISSN)

  • 0031-9007

Digital Object Identifier (DOI)

  • 10.1103/physrevlett.106.135701


  • eng