Journal article
3d Abelian gauge theories at the boundary
Abstract
A four-dimensional Abelian gauge field can be coupled to a 3d CFT with a U(1) symmetry living on a boundary. This coupling gives rise to a continuous family of boundary conformal field theories (BCFT) parametrized by the gauge coupling τ in the upper-half plane and by the choice of the CFT in the decoupling limit τ → ∞. Upon performing an SL(2, ℤ) transformation in the bulk and going to the decoupling limit in the new frame, one finds a …
Authors
Di Pietro L; Gaiotto D; Lauria E; Wu J
Journal
Journal of High Energy Physics, Vol. 2019, No. 5,
Publisher
Springer Nature
Publication Date
May 2019
DOI
10.1007/jhep05(2019)091
ISSN
1126-6708