منابع مشابه
Cosmic D-strings as Axionic D-term Strings
In this work we derive non-singular BPS string solutions from an action that captures the essential features of aD−brane-anti-D−brane system compactified to four dimensions. The model we consider is a supersymmetric abelian Higgs model with a D−term potential coupled to an axion-dilaton multiplet. The strings in question are axionic D−term strings which we identify with the D−strings of type II...
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Possible Dirichlet boundary states for WZW models with untwisted affine super Kac-Moody symmetry are classified for all compact simple Lie groups. They are obtained by innerand outer-automorphism of the group. D-brane world-volume turns out to be a group manifold of a symmetric subgroup, so that the moduli space of D-brane is a irreducible Riemannian symmetric space. It is also clarified how th...
متن کاملLarge-D gravity and low-D strings.
We show that in the limit of a large number of dimensions a wide class of nonextremal neutral black holes has a universal near-horizon limit. The limiting geometry is the two-dimensional black hole of string theory with a two-dimensional target space. Its conformal symmetry explains the properties of massless scalars found recently in the large-D limit. For black branes with string charges, the...
متن کاملKinky D - Strings
We study two-dimensional SQED viewed as the world-volume theory of a D-string in the presence of D5-branes with non-zero background fields that induce attractive forces between the branes. In various approximations, the low-energy dynamics is given by a hyperKähler, or hyperKähler with torsion, massive sigma-model. We demonstrate the existence of kink solutions corresponding to the string inter...
متن کاملPerturbative Dynamics of Fractional Strings on Multiply Wound D-strings
Fractional strings in the spectrum of states of open strings attached to a multiply wound D-brane is explained. We first describe the fractional string states in the low-energy effective theory where the topology of multiple winding is encoded in the gauge holonomy. The holonomy induces twisted boundary conditions responsible for the fractional moding of these states. We also describe fractiona...
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ژورنال
عنوان ژورنال: Nuclear Physics B
سال: 1996
ISSN: 0550-3213
DOI: 10.1016/0550-3213(96)00024-7