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The symmetric branes of the H 4 WZW model
Author(s) -
D'Appollonio G.
Publication year - 2005
Publication title -
fortschritte der physik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.469
H-Index - 71
eISSN - 1521-3978
pISSN - 0015-8208
DOI - 10.1002/prop.200410237
Subject(s) - brane cosmology , physics , boundary (topology) , analogy , string (physics) , theoretical physics , mathematical physics , mathematics , philosophy , mathematical analysis , linguistics
We review the solution of the boundary CFTs that describe the symmetric branes in the Nappi‐Witten gravitational wave, namely D2 and S 1 branes. The D2 branes are the twisted branes of the model while the S 1 branes are the Cardy branes. We present in both cases the bulk‐boundary couplings and the boundary three‐point couplings and discuss the relation with branes in AdS 3 and in S 3 . We also discuss the analogy between the open string couplings in the H 4 model and the couplings for magnetized and intersecting branes.