Phases of surface defects in Scalar Field Theories

Avia Raviv-Moshe*, Siwei Zhong

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


We study mass-type surface defects in a free scalar and Wilson-Fisher (WF) O(N) theories. We obtain exact results for the free scalar defect, including its RG flow and defect Weyl anomaly. We classify phases of such defects at the WF fixed point near four dimensions, whose perturbative RG flow is investigated. We propose an IR effective action for the non-perturbative regime and check its self-consistency.

Original languageEnglish
Article number143
JournalJournal of High Energy Physics
Issue number8
StatePublished - Aug 2023
Externally publishedYes


  • Effective Field Theories
  • Global Symmetries
  • Renormalization Group
  • Scale and Conformal Symmetries


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