Entanglement entropy for relevant and geometric perturbations

Vladimir Rosenhaus*, Michael Smolkin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

68 Scopus citations


Abstract: We continue the study of entanglement entropy for a QFT through a perturbative expansion of the path integral definition of the reduced density matrix. The universal entanglement entropy for a CFT perturbed by a relevant operator is calculated to second order in the coupling. We also explore the geometric dependence of entanglement entropy for a deformed planar entangling surface, finding surprises at second order.

Original languageAmerican English
Article number15
JournalJournal of High Energy Physics
Issue number2
StatePublished - 2015
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2015, The Author(s).


  • AdS-CFT Correspondence
  • Field Theories in Higher Dimensions
  • Renormalization Group


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