Composite operators in TT¯ -deformed free QFTs

Anshuman Dey, Mikhail Goykhman*, Michael Smolkin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


We study perturbative renormalization of the composite operators in the TT¯ -deformed two-dimensional free field theories. The pattern of renormalization for the stress-energy tensor is different in the massive and massless cases. While in the latter case the canonical stress tensor is not renormalized up to high order in the perturbative expansion, in the massive theory there are induced counterterms at linear order. For a massless theory our results match the general formula derived recently in [1].

Original languageAmerican English
Article number6
JournalJournal of High Energy Physics
Issue number6
StatePublished - Jun 2021

Bibliographical note

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© 2021, The Author(s).


  • Conformal Field Theory
  • Field Theories in Lower Dimensions
  • Integrable Field Theories
  • Renormalization Regularization and Renormalons


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