Symmetry Breaking Boundary States and Defect Lines

Details Symmetry Breaking Boundary States and Defect Lines Symmetry Breaking Boundary States and Defect Lines

2002-03-18

arxiv.org/abs/hep-th/0203161v3

JHEP 0206 (2002) 028

Physics

High Energy Physics

High Energy Physics - Theory

36 pages, LaTeX, 1 figure, V1: typos corrected and references added, v2: we added a short remark concerning the geometry of sy

Scientific paper

10.1088/1126-6708/2002/06/028

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.

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