نتایج جستجو برای: supergravity

تعداد نتایج: 6797  

2009
Joaquim Gomis Diederik Roest

Recently a correspondence between non-propagating degrees of freedom in maximal supergravity and the very extended algebra E11 has been found. We perform a similar analysis for a supergravity theory with eight supercharges and very extended G2. In particular, in the context of d = 5 minimal supergravity, we study whether supersymmetry can be realised on higher-rank tensors with no propagating d...

2008
Axel Kleinschmidt Diederik Roest

The bosonic sector of various supergravity theories reduces to a homogeneous space G/H in three dimensions. The corresponding algebras g are simple for (half-)maximal supergravity, but can be semi-simple for other theories. We extend the existing literature on the Kac–Moody extensions of simple Lie algebras to the semi-simple case. Furthermore, we argue that for N = 2 supergravity the simple al...

1998
Akikazu Hashimoto

We construct an explicit supergravity solution for a configuration of localized D4brane ending on a D6-brane, restricted to the near horizon region of the latter. We generate this solution by dimensionally reducing the supergravity solution for a flat M5-brane in R1,7 × C/ZN with the M5-brane partially embedded in C/ZN . We describe the general class of localized intersections and overlaps whos...

2008
Donam Youm

We present the explicit forms of supergravity solutions for the various intersecting two BPS branes in eleven and ten dimensions, where one brane is localized at the delocalized other brane. Our partially localized supergravity solutions describe brane configurations in the near horizon region of the delocalized branes, where the two constituent branes meet in the overall transverse space and t...

2000
A. H. Chamseddine W. A. Sabra

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...

2004
Iosif Bena Nicholas P. Warner

We construct a new harmonic family: dielectric flow solutions with maximal supersymmetry in eleven-dimensional supergravity. These solutions are asymptotically AdS4 ×S7, while in the infra-red the M2 branes are dielectrically polarized into M5 branes. These solutions are holographically dual to vacua of the mass deformed theory on M2 branes. They also provide an interesting insight on the super...

1998
Marco Fabbrichesi Gabriele Ferretti Roberto Iengo

We compare the amplitudes for the long-distance scattering of three gravitons in eleven dimensional supergravity and matrix theory at finite N . We show that the leading supergravity term arises from loop contributions to the matrix theory effective action that are not required to vanish by supersymmetry. We evaluate in detail one type of diagram—the setting sun with only massive propagators—re...

2001
M. Petrini R. Russo A. Zaffaroni

We analyse the Seiberg Witten curve describing the N = 2 gauge theory dual to the supergravity solution with fractional branes. Emphasis is given to those aspects that are related to stringy mechanism known as the enhançon. We also compare our results with the features of the supergravity duals, which have been variously interpreted in the literature. Known aspects of the N = 2 gauge theories s...

1999
D. Z. Freedman

States on the Coulomb branch of N = 4 super-Yang-Mills theory are studied from the point of view of gauged supergravity in five dimensions. These supersymmetric solutions provide examples of consistent truncation from type IIB supergravity in ten dimensions. A mass gap for states created by local operators and perfect screening for external quarks arise in the supergravity approximation. We off...

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