1999/09/30 by JM Figueroa-O'Farrill, José M Figueroa-O'Farrill, Sonia Stanciu +1 · 3 citations
Mathematics · Physics and Astronomy · #Algebraic structures and combinatorial models #Black Holes and Theoretical Physics #Homotopy and Cohomology in Algebraic Topology #hep-th
paper · pdf · doi:10.1088/1126-6708/2000/01/024
published as JHEP 0001 (2000) 024 · 21 pages, 4 figures. (A small correction in Section 2.4)
arxiv created 2000/01/17 · openalex publication_date 2000/01/19 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We re-examine the problem of determining the possible D-branes in the Nappi-Witten background. In addition to the known branes, we find that there are also D-instantons, flat euclidean D-strings and curved D-membranes admitting parallel spinors, all of which can be interpreted as (twisted) conjugacy classes in the Nappi-Witten group.