Boundary states in coset conformal field theories

Details Boundary states in coset conformal field theories Boundary states in coset conformal field theories

2001-11-26

arxiv.org/abs/hep-th/0111230v3

Nucl.Phys. B629 (2002) 209-232

Physics

High Energy Physics

High Energy Physics - Theory

30 pages, latex2e; (v3) typos corrected in eqs.(3.24)(3.26)(3.27), no change in the results

Scientific paper

10.1016/S0550-3213(02)00131-1

We construct various boundary states in the coset conformal field theory G/H. The G/H theory admits the twisted boundary condition if the G theory has an outer automorphism of the horizontal subalgebra that induces an automorphism of the H theory. By introducing the notion of the brane identification and the brane selection rule, we show that the twisted boundary states of the G/H theory can be constructed from those of the G and the H theories. We apply our construction to the su(n) diagonal cosets and the su(2)/u(1) parafermion theory to obtain the twisted boundary states of these theories.

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