Showing 2003 · hep-thShow all

12 papers · 2 filters

hep-th2003★ 13 cited

The gauge invariance of the non-Abelian Chern-Simons action for D-branes revisited

Joke Adam, Jos Gheerardyn, Bert Janssen +1

We present an elegant method to prove the invariance of the Chern-Simons part of the non-Abelian action for N coinciding D-branes under the R-R and NS-NS gauge transformations, by…

hep-th2003★ 46 cited

Polyvector Super-Poincare Algebras

Dmitri V. Alekseevsky, Vicente Cortés, Chandrashekar Devchand +1

A class of Z_2-graded Lie algebra and Lie superalgebra extensions of the pseudo-orthogonal algebra of a spacetime of arbitrary dimension and signature is investigated. They have th…

hep-th2003★ 3 cited

A Generalisation of (Very) Special Geometry

Jos Gheerardyn

We construct non-Abelian N=2 on-shell vector multiplets in five and in four dimensions. Closing of the supersymmetry algebra imposes dynamical constraints on the fields, and these…

hep-th2003★ 3 cited

Wess-Zumino sigma models with non-Kahlerian geometry

K. S. Stelle, A. Van Proeyen

Supersymmetry of the Wess-Zumino (N=1, D=4) multiplet allows field equations that determine a larger class of geometries than the familiar Kahler manifolds, in which covariantly ho…

hep-th2003★ 17 cited

Backreaction and the rolling tachyon -- an effective action point of view

Yves Demasure, Romuald A. Janik

We compute the decay of an unstable D9 brane in type IIA string theory including backreaction effects using an effective field theory approach. The open string tachyon on the brane…

hep-th2003★ 12 cited

BPS orientifold planes from crosscap states in Calabi-Yau compactifications

L. R. Huiszoon, K. Schalm

We use the results of hep-th/0007174 on the simple current classification of open unoriented CFTs to construct half supersymmetry preserving crosscap states for rational Calabi-Yau…

hep-th2003★ 48 cited

Interpolating from AdS_(D-2) X S^2 to AdS_D

S. Cucu, H. Lu, J. F. Vazquez-Poritz

We investigate a large class of supersymmetric magnetic brane solutions supported by U(1) gauge fields in AdS gauged supergravities. We obtain first-order equations in terms of a s…

hep-th2003★ 6 cited

Supertubes in reduced holonomy manifolds

Joaquim Gomis, Toni Mateos, Pedro J. Silva +1

We show that the supertube configurations exist in all supersymmetric type IIA backgrounds which are purely geometrical and which have, at least, one flat direction. In other words…

hep-th2003★ 31 cited

A Supersymmetric and Smooth Compactification of M-theory to AdS(5)

S. Cucu, H. Lu, J. F. Vazquez-Poritz

We obtain smooth M-theory solutions whose geometry is a warped product of AdS_5 and a compact internal space that can be viewed as an S^4 bundle over S^2. The bundle can be trivial…

hep-th2003★ 33 cited

A Microscopical Description of Giant Gravitons II: The AdS_5 x S^5 Background

Bert Janssen, Yolanda Lozano, Diego Rodriguez-Gomez

In this article we continue with the microscopical investigation of giant graviton configurations in AdS_m x S^n spacetimes, initiated in hep-th/0207199. Using dualities and a Matr…

hep-th2003★ 1 cited

Probes in fluxbranes and supersymmetry breaking through Hodge-duality

Jos Gheerardyn, Bert Janssen

In this letter we consider what happens to an M2-brane probe when Minkowski space is dimensionally reduced to a fluxbrane solution of IIA supergravity. Given that fluxbrane reducti…

hep-th2003★ 16 cited

N=2 supergravity models with stable de Sitter vacua

Pietro Fre', Mario Trigiante, Antoine Van Proeyen

In the present talk I shall review the construction of N=2 supergravity models exhibiting stable de Sitter vacua. These solutions represent the first instance of stable backgrounds…