%0 Journal Article
%A Ruiz Ruiz, Fernando
%A Hernández Redondo, Rafael
%A Horcajada Realez, Antonio
%T D-branes with Lorentzian signature in the Nappi-Witten model
%D 2011
%@ 1126-6708
%U https://hdl.handle.net/20.500.14352/44135
%X 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.
%~