منابع مشابه
p–BRANES, D–BRANES AND M–BRANES
We consider solutions to the string effective action corresponding to p–Branes, D–Branes and M –Branes and discuss some of their properties.
متن کاملCosmological Creation of D-branes and anti-D-branes
We argue that the early universe may be described by an initial state of space-filling branes and anti-branes. At high temperature this system is stable. At low temperature tachyons appear and lead to a phase transition, dynamics, and the creation of D-branes. These branes are cosmologically produced in a generic fashion by the Kibble mechanism. From an entropic point of view, the formation of ...
متن کاملD-branes from M-branes
The 2-brane and 4-brane solutions of ten dimensional IIA supergravity have a dual interpretation as Dirichlet-branes, or 'D-branes', of type IIA superstring theory and as 'M-branes' of an S 1-compactified eleven dimensional supermembrane theory, or M-theory. This eleven-dimensional connection is used to determine the ten-dimensional Lorentz covariant worldvolume action for the Dirichlet super 2...
متن کاملDeformations and D-branes
I discuss the relation of Hochschild cohomology to the physical states in the closed topological string. This allows a notion of deformation intrinsic to the derived category. I use this to identify deformations of a quiver gauge theory associated to a D-branes at a singularity with generalized deformations of the geometry of the resolution of the singularity. An explicit map is given from nonc...
متن کاملD-branes and Cosmology
D-branes, topological defects in string theory on which string endpoints can live, may give new insight into the understanding of the cosmological evolution of the Universe at early epochs. We analyze the dynamics of D-branes in curved backgrounds and discuss the parameter space of M-theory as a function of the coupling constant and of the curvature of the Universe. We show that D-branes may be...
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ژورنال
عنوان ژورنال: Progress of Theoretical Physics Supplement
سال: 2009
ISSN: 0375-9687
DOI: 10.1143/ptps.177.12