Results 51 to 60 of about 53,013 (301)
The realization of higher-dimensional breaking mechanism
We study D-branes on Calabi-Yau threefolds, which are realized through the blowing up the singularity of orbifold. This D-branes are represented as sheaves, which can be stable or unstable, what is connected with the transition in the Teichmüller space ...
Т. В. Обиход
doaj +1 more source
We include in F-theory, through open Type I F-theory branes (F-branes), string theories with N = 1 supersymmetry, both Type I and heterotic. Type I branes are distinguished from Type II by worldvolume parity projection.
Machiko Hatsuda, Warren Siegel
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Non-relativistic D-brane from T-duality along null direction
We construct new type of non-relativistic D-branes which are defined with the help of T-duality along null direction. We find Lagrangian and Hamiltonian formulation of these D-branes and study their properties under T-duality transformations.
J. Klusoň
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D-branes on K3-fibrations [PDF]
B-type D-branes are constructed on two different K3-fibrations over IP_1 using boundary conformal field theory at the rational Gepner points of these models. The microscopic CFT charges are compared with the Ramond charges of D-branes wrapped on holomorphic cycles of the corresponding Calabi-Yau manifold.
Kaste, P. +3 more
openaire +3 more sources
Level-rank duality of untwisted and twisted D-branes of the so(N)_K WZW model
We analyze the level-rank duality of untwisted and epsilon-twisted D-branes of the so(N)_K WZW model. Untwisted D-branes of so(N)_K are characterized by integrable tensor and spinor representations of so(N)_K.
Alekseev +67 more
core +1 more source
D-branes in a topologically nontrivial B-field [PDF]
We study global worldsheet anomalies for open strings ending on several coincident D-branes in the presence of a B-field. We show that cancellation of anomalies is made possible by a correlation between the t'Hooft magnetic flux on the D-branes and the ...
Kapustin, Anton
core +4 more sources
Noncommutative gauge theories on D-branes in non-geometric backgrounds
We investigate the noncommutative gauge theories arising on the worldvolumes of D-branes in non-geometric backgrounds obtained by T-duality from twisted tori.
Chris Hull, Richard J. Szabo
doaj +1 more source
We analyze the possible configurations of D-branes breaking on other D-branes. We describe these configurations in the context of a brane-antibrane effective theory in two ways. First as a tachyon configuration representing a non-trivial bundle over the sphere surrounding the end of the brane a la Polchinski, and second in terms of tachyon solitons ...
Bergman, Oren, Lifschytz, Gilad
openaire +2 more sources
D-branes in Coset Models [PDF]
39 pages, 3 figures, some remarks and references ...
Fredenhagen, S., Schomerus, V.
openaire +3 more sources
Noncommutative D-brane from Covariant AdS Superstring
We explore noncommutative D-branes in the AdS_5xS^5 background from the viewpoint of \kappa-invariance of a covariant open string action in the Green-Schwarz formulation.
Agarwal +75 more
core +1 more source

