منابع مشابه
Comments on I1-branes
We explore the supergravity solution of D5-branes intersecting as an I1-brane. In a suitable near-horizon limit the geometry is in qualitative agreement with that found in the microscopic open-string analysis as well as the NS5-brane analysis of Itzhaki, Kutasov and Seiberg. In particular, the ISO(1, 1) Lorentz symmetry of the intersection domain is enhanced to ISO(1, 2). The discussion is gene...
متن کاملComments on Half S-Branes
Following hep-th/0305177, we write the boundary state of half S-brane in bosonic string theory as a grand canonical partition function of a unitary matrix model. From this representation, it follows that the annulus amplitude can be written as a grand canonical partition function of a unitary two-matrix model. We also show that the contribution of the exponentially growing couplings to the time...
متن کاملComments on D-branes in flux backgrounds
We construct supergravity solutions for D-branes in nontrivial flux backgrounds. We revisit the issue of charge quantization in this framework, and show that in these backgrounds, charge need not be quantized. We also show in a particular example that the semiclassical description of branes produces integral charges. e-mail address: [email protected]
متن کاملComments on D-branes in AdS3
We study D-branes that preserve a diagonal SL(2) affine Lie algebra in string theory on AdS3. We find three classes of solutions, corresponding to the following representations of SL(2): (1) degenerate, finite dimensional representations with half integer spin, (2) principal continuous series, (3) principal discrete series. We solve the bootstrap equations for the vacuum wave functions and disc...
متن کاملComments on the Fate of unstable orbifolds
We study the localized tachyon condensation in their mirror Landau-Ginzburg picture. We completely determine the decay mode of an unstable orbifold C/Zn, r = 1, 2, 3 under the condensation of a tachyon with definite R-charge and mass by extending the Vafa’s work hep-th/0111105. Here, we give a simple method that works uniformly for all C/Zn. For C/Zn, where method of toric geometry works, we gi...
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ژورنال
عنوان ژورنال: Journal of High Energy Physics
سال: 2001
ISSN: 1029-8479
DOI: 10.1088/1126-6708/2001/02/023