Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Irrelevant Deformations with Boundaries and Defects   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.

30
The categories of this paper are: q-alg
34
The categories of this paper are: chem-ph
8
The categories of this paper are: hep-ex
37
The categories of this paper are: supr-con
24
The categories of this paper are: dg-ga
1
The categories of this paper are: cs
22
The categories of this paper are: chao-dyn
14
The categories of this paper are: math-ph
19
The categories of this paper are: eess
3
The categories of this paper are: physics
23
The categories of this paper are: solv-int
29
The categories of this paper are: funct-an
33
The categories of this paper are: plasm-ph
27
The categories of this paper are: comp-gas
18
The categories of this paper are: econ
13
The categories of this paper are: quant-ph