145 citations
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4 papers · 1 filter
On the unitarity of gauged non-compact WZNW strings
Jonas Bjornsson, Stephen Hwang
In this paper we investigate the unitarity of gauged non-compact WZNW strings i.e. string theories formulated as G/H' WZNW models, where G is a non-compact group. These models repr…
Sharp constants related to the triangle inequality in Lorentz spaces
Sorina Barza, Viktor Kolyada, Javier Soria
We study the Lorentz spaces in the range , for which the standard functional i…
Topological defects for the free boson CFT
Jürgen Fuchs, Matthias R. Gaberdiel, Ingo Runkel +1
Two different conformal field theories can be joined together along a defect line. We study such defects for the case where the conformal field theories on either side are single f…
Bi-branes: Target Space Geometry for World Sheet topological Defects
Jürgen Fuchs, Christoph Schweigert, Konrad Waldorf
We establish that the relevant geometric data for the target space description of world sheet topological defects are submanifolds - which we call bi-branes - in the product M1 x M…