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Irrelevant Deformations with Boundaries and Defects

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arxiv 2109.13180 v1 pith:LAYUKM6B submitted 2021-09-27 hep-th

classification hep-th
keywords deformedboundariesdefectsdeformationsderivefunctionirrelevantmatrices
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

We initiate the study of $T\bar T$-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.

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  1. Boundary Quantum Field Theories Perturbed by ${\rm T}\bar{\rm T}$: Towards a Form Factor Program

    hep-th 2025-01 reject novelty 6.0 of 10

    The paper constructs deformed boundary minimal form factors for T anti-T perturbed theories and rewrites the sinh-Gordon Dirichlet minimal form factor in the same block form, but the central solution formula has a sign error.

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