Renormalisation in $\text{T}\bar{\text{T}}$-Deformed (Non-)Integrable Theories

Abstract

That the exact quantum S-matrix of $\text{T}\bar{\text{T}}$-deformed field theories is known has interesting consequences for their perturbative renormalisation. Recent investigations into the interplay between renormalisation and integrable deformations have focused on those cases where the (undeformed) seed theories are integrable. In this paper, we study the perturbative renormalisation of non-integrable $\text{T}\bar{\text{T}}$-deformed field theories, focusing on a theory of scalars with a quartic interaction. We show that in this theory, the 4-point 1-loop S-matrix exhibits features similar to its integrable cousins. We also carry out a similar analysis for the case of an integrable quantum field theory comprising a pair of chiral bosons. Our discussion of this latter theory supplies the first explicit example of a perturbative field theory computation in the formalism due to Sen.

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Cited by in corpus (7)

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• Quantization of the ModMax Oscillator
• Flows in the Space of Interacting Chiral Boson Theories
• On-Shell Action for Type IIB Supergravity and Superstrings on $Ad{S}_5\times S^5$
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• Monopoles, Clarified