Domain Walls of D=8 Gauged Supergravities and their D=11 Origin (2003)
Alonso-Alberca, N, Bergshoeff, E A, Gran, U G, Linares, R, Ortín, Tomas, Roest, D
Performing a Scherk-Schwarz dimensional reduction of D=11 supergravity on a three-dimensional group manifold we construct five D=8 gauged maximal supergravities whose gauge groups are the...
Lozano, Y., Bergshoeff, E. A., Ortín, Tomas
Published in: Nucl. Phys. B 518 (1998) 363-423 citations recorded in [Science Citation Index] Abstract: We investigate the effective worldvolume theories of branes in a background given by (the...
Bergshoeff, E A, Lozano, Y, Ortín, Tomas
We investigate the effective worldvolume theories of branes in a background given by (the bosonic sector of) 10-dimensional massive IIA supergravity (``massive branes'') and their M-theoretic origin....
A note on the D-2-brane of the massive type IIA theory and gauged $\sigma$ models (1997)
Gauging the M-2-brane effective action with respect to an Abelian isometry in such a way that the invariance under gauge transformations of the 3-form potential is maintained (slightly modified) we...
Kaluza-Klein monopoles and gauged $\sigma$ models (1997)
Bergshoeff, E A, Janssen, B, Ortín, Tomas
We propose an effective action for the 11-dimensional (bosonic) Kaluza-Klein monopole solution. The construction of the action requires that the background fields admit an Abelian isometry group. The...
Non-Supersymmetric (but) Extreme Black Holes, Scalar Hair and Other Open Problems (1997)
We give a brief overview of black-hole solutions in four-dimensional supergravity theories and their extremal and supersymmetric limits. We also address problems like cosmic censorship and no-hair...
Transformation of Black-Hole Hair under Duality and Supersymmetry (1997)
Alvarez, Enrique, Meessen, P, Ortín, Tomas
We study the transformation under the String Theory duality group of the observable charges (mass, angular momentum, NUT charge, electric, magnetic and different scalar charges) of four dimensional...
kappa$ Symmetry, Supersymmetry and Intersecting Branes (1997)
Ortín, Tomas, Kallosh, R., Bergshoeff, E. A., Papadopoulos, G. J.
Published in: Nucl. Phys. B 502 (1997) 149 citations recorded in [Science Citation Index] Abstract: We present a new form of kappa-symmetry transformations for D-branes in which the dependence on the...
$\kappa$ Symmetry, Supersymmetry and Intersecting Branes (1997)
Bergshoeff, E A, Kallosh, Renata E, Ortín, Tomas, Papadopoulos, G J
We present a new form of kappa-symmetry transformations for D-branes in which the dependence on the Born-Infeld field strength is expressed as a relative rotation on the left- and right-moving fields...
Extremality Versus Supersymmetry in Stringy Black Holes (1996)
We study general black-hole solutions of the low-energy string effective action in arbitrary dimensions using a general metric that can describe them all in a unified way both in the extreme and...
Massive and Massless Supersymmetric Black Holes (1996)
We review some recent work on the existence and classification of extreme black-hole-type solutions in N=8 supergravity. For the black holes considered (those that are also solutions of N=4...
The eleven-dimensional five-brane (1996)
Bergshoeff, E A, De Roo, M, Ortín, Tomas
We consider the action, in arbitrary curved background, of the eleven-dimensional five-brane to second order in the curvature of the worldvolume tensor field. We show that this action gives upon...
The eleven-dimensional five-brane (1996)
Roo, M. De, Bergshoeff, E. A. De, Ortín, Tomas
Published in: Phys. Lett. B 386 (1996) 85-90 citations recorded in [Science Citation Index] Abstract: We consider the action, in arbitrary curved background, of the eleven-dimensional five-brane to...
Stationary axion/dilaton solutions and supersymmetry (1996)
Kallosh, R., Bergshoeff, E. A., Ortín, Tomas
Published in: Nucl. Phys. B 478 (1996) 156-180 citations recorded in [Science Citation Index] Abstract: We present a new set of supersymmetric stationary solutions of pure N=4,d=4 supergravity that...
Stationary axion/dilaton solutions and supersymmetry (1996)
Bergshoeff, E A, Kallosh, Renata E, Ortín, Tomas
We present a new set of supersymmetric stationary solutions of pure N=4,d=4 supergravity that generalize (and include) the Israel-Wilson- Perj\'es solutions of Einstein-Maxwell theory. All solutions...
Massless black holes as black diholes and quadruholes (1996)
Massless black holes can be understood as bound states of a (positive mass) extreme a=\sqrt{3} black hole and a singular object with opposite ({\it i.e.}~negative) mass with vanishing ADM (total)...
A non-supersymmetric dyonic extreme Reissner-Nordström black hole (1996)
We present a dyonic embedding of the extreme Reissner-Nordstr\"om black hole in N=4 and N=8 supergravity that breaks all supersymmetries.
Supersymmetric black holes in N=8 supergravity (1996)
We study the embedding of extreme (multi-) dilaton black hole solutions for the values of the parameter a=\sqrt{3},1,1/\sqrt{3},0 in N=4 and N=8 four-dimensional supergravity. For each black hole...