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

2011/04/30 by R. Hernández, R. Hernandez, G. Horcajada +1 · 1 citation
Mathematics · Physics and Astronomy · #Algebraic structures and combinatorial models #Black Holes and Theoretical Physics #Brane #Current algebra #Degenerate energy levels #Graded Lie algebra #Homotopy and Cohomology in Algebraic Topology #Lie algebra #Rewriting #Signature (topology) #String (physics) #String theory #Supersymmetry algebra #hep-th

paper · pdf · doi:10.1007/jhep08(2011)047

published in Journal of High Energy Physics 2011(8) (Springer Nature) · 22 pages

arxiv created 2011/07/26 · openalex publication_date 2011/08/01 · arxiv updated 2011/08/17 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

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.

Citations

• More D-branes in the Nappi-Witten background
• String theory and noncommutative geometry
• Strings in background electric field, space/time noncommutativity and a new noncritical string theory
• Non-abelian bosonization in two dimensions
• D-branes in group manifolds
• Branes in the 2D black hole