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Universal Deformations

Aleksey Cherman, Theodore Jacobson, Maria Neuzil

SciPost Phys. 12, 116 (2022) · published 1 April 2022


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.

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