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arXiv:2109.13180 · Journal of Statistical Mechanics Theory and Experiment

Irrelevant deformations with boundaries and defects

Yunfeng Jiang, Florian Loebbert, De-liang Zhong

Published Apr 1, 2022• 10 citations
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Abstract

Abstract We initiate the study of T T ¯ -like irrelevant solvable deformations in quantum field theory with boundaries and defects. For this purpose, we employ a general formalism developed in the context of spin chains, which allows us to derive both, the deformed bulk and boundary/defect scattering matrices of integrable models. Using the deformed scattering matrices, we derive the flow equation for the deformed finite volume spectrum, as well as the cylinder partition function and the exact g-function.

DOI
10.1088/1742-5468/ac6251

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A general definition of JTaJT_aJTa​ -- deformed QFTs
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