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Universal Deformations

by Aleksey Cherman, Theodore Jacobson, Maria Neuzil

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Submission summary

Authors (as registered SciPost users): Theo Jacobson
Submission information
Preprint Link:  (pdf)
Date accepted: 2022-02-28
Date submitted: 2022-01-19 21:30
Submitted by: Jacobson, Theo
Submitted to: SciPost Physics
Ontological classification
Academic field: Physics
  • High-Energy Physics - Theory
Approach: Theoretical


QFTs with local topological operators feature unusual sectors called "universes," which are separated by infinite-tension domain walls. We show that such systems have relevant deformations with exactly-calculable effects. These deformations allow one to dial the vacuum energy densities of the universes. We describe applications of these deformations to confinement in 2d gauge theories, as well as a curious violation of the effective field theory naturalness principle.

List of changes

-Fixed various typos and defined quantities that had been used without explanation.

-Added Footnote 1 to clarify a point raised by the second referee: we consider bases for local topological operators such that the zero operator does not appear in the fusion rules.

Published as SciPost Phys. 12, 116 (2022)

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