D-branes with Lorentzian signature in the Nappi-Witten model

Details D-branes with Lorentzian signature in the Nappi-Witten model D-branes with Lorentzian signature in the Nappi-Witten model

2011-04-25

arxiv.org/abs/1104.4730v3

JHEP 1108:047,2011

Physics

High Energy Physics

High Energy Physics - Theory

22 pages

Scientific paper

10.1007/JHEP08(2011)047

Lorentzian signature D-branes of all dimensions for the Nappi-Witten string are constructed. This is done by rewriting the gluing condition $J_+=FJ_-$ for the model chiral currents on the brane as a well posed first order differential problem and by solving it for Lie algebra isometries $F$ other than Lie algebra automorphisms. By construction, these D-branes are not twined conjugacy classes. Metrically degenerate D-branes are also obtained.

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