Symmetry Breaking Boundary States and Defect Lines
High Energy Physics - Theory
2014-11-18 v3 Condensed Matter
Abstract
We present a large and universal class of new boundary states which break part of the chiral symmetry in the underlying bulk theory. Our formulas are based on coset constructions and they can be regarded as a non-abelian generalization of the ideas that were used by Maldacena, Moore and Seiberg to build new boundary states for SU(N). We apply our expressions to construct defect lines joining two conformal field theories with possibly different central charge. Such defects can occur e.g. in the AdS/CFT correspondence when branes extend to the boundary of the AdS-space.
Cite
@article{arxiv.hep-th/0203161,
title = {Symmetry Breaking Boundary States and Defect Lines},
author = {Thomas Quella and Volker Schomerus},
journal= {arXiv preprint arXiv:hep-th/0203161},
year = {2014}
}
Comments
36 pages, LaTeX, 1 figure, V1: typos corrected and references added, v2: we added a short remark concerning the geometry of symmetry breaking D-branes in group manifolds