Supergravity brane cosmologies
نویسندگان
چکیده
منابع مشابه
Exact anisotropic brane cosmologies
In two recent papers Randall and Sundrum [1,2] have shown that a scenario with an infinite fifth dimension in the presence of a brane can generate a theory of gravity which mimics purely four-dimensional gravity, both with respect to the classical gravitational potential and with respect to gravitational radiation. The gravitational self-couplings are not significantly modified in this model. T...
متن کاملBrane Cosmologies without Orbifolds
We study the dynamics of branes in configurations where 1) the brane is the edge of a single anti-de Sitter space and 2) the brane is the surface of a vacuum bubble in an asymptotically flat space-time. In both cases we find solutions that resemble the standard Robertson-Walker cosmologies although in the latter, the evolution is not controlled by matter on the brane, but by the five-dimensiona...
متن کاملSp-brane accelerating cosmologies
We investigate time dependent solutions (S-brane solutions) for product manifolds consisting of factor spaces where only one of them is non-Ricci-flat. Our model contains minimally coupled free scalar field as a matter source. We discuss a possibility of generating late time acceleration of the Universe. The analysis is performed in conformally related Brans-Dicke and Einstein frames. Dynamical...
متن کاملSupergravity and Brane Solutions
The U(1) gauged version of the Strominger-Vafa five dimensional N = 2 supergravity with one vector multiplet is obtained via dimensional reduction from the N = 1 ten dimensional supergavity. Using such explicit relation between the gauged supergravity theory and ten dimensional supergravity, all known solutions of the five dimensional theory can be lifted up to tendimensions. The eleven dimensi...
متن کاملBrane Transmutation in Supergravity
We study a family of BPS solutions of type IIA supergravity that can be interpreted as describing the ‘transmutation’ of a Neveu-Schwarz five-brane into a D4-brane in the presence of a D6-brane. The D4-brane, which terminates on the D6-brane, can be equally well interpreted as a ‘pure multipole’ configuration of NS5-brane wrapped tightly around the D6-brane. Such a transmutation is a “near-core...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review D
سال: 2000
ISSN: 0556-2821,1089-4918
DOI: 10.1103/physrevd.62.083515