Bergshoeff, E. A., Hartong, J., Ploegh, A., Sorokin, D.
We construct the half-supersymmetric instanton solutions that are electric-magnetically dual to the recently discussed half-supersymmetric Q7-branes. We call these instantons `Q-instantons'. Whereas...
Bergshoeff, E.A., Hartong, J., Ploegh, A., Sorokin, D.
We construct the half-supersymmetric instanton solutions that are electric-magnetically dual to the recently discussed half-supersymmetric Q7-branes. We call these instantons “Q-instantons”....
Q-branes in type IIB supergravity (2008)
Bergshoeff, E.A., Hartong, J., Sorokin, D.
The notion of Q7-branes and Q-instantons is introduced. These are one-half BPS solutions of the type IIB supergravity theory characterized by a set of three parameters p, q, r such that r^2 > 4pq....
Pseudo-supersymmetry and a Tale of Alternate Realities (2007)
Bergshoeff, E. A., Hartong, J., Ploegh, A., Rosseel, J., Bleeken, D. Van Den
We discuss how all variant 10d and 11d maximal supergravities, including star supergravities and supergravities in different signatures, can be obtained as different real slices of three complex...
Classical resolution of singularities in dilaton cosmologies (2005)
Bergshoeff, E. A., Collinucci, A., Roest, D., Russo, J. G., Townsend, P. K.
For models of dilaton-gravity with a possible exponential potential, such as the tensor-scalar sector of IIA supergravity, we show how cosmological solutions correspond to trajectories in a 2D Milne...
Cosmological D-instantons and Cyclic Universes (2005)
Bergshoeff, E. A., Collinucci, A., Roest, D., Russo, J. G., Townsend, P. K.
For models of gravity coupled to hyperbolic sigma models, such as the metric-scalar sector of IIB supergravity, we show how smooth trajectories in the `augmented target space' connect FLRW...
Cosmological D-instantons and cyclic universes (2005)
Roest, D., Collinucci, A., Bergshoeff, E.A., Russo, J.G., Townsend, P.K.
For models of gravity coupled to hyperbolic sigma models, such as the metric-scalar sector of IIB supergravity, we show how smooth trajectories in the ‘augmented target space’ connect FLRW...
Classical resolution of singularities in dilaton cosmologies (2005)
Roest, D., Collinucci, A., Bergshoeff, E.A., Russo, J.G., Townsend, P.K.
For models of dilaton gravity with a possible exponential potential, such as the tensor–scalar sector of IIA supergravity, we show how cosmological solutions correspond to trajectories in a 2D...
The Bianchi Classification of Maximal D=8 Gauged Supergravities (2003)
Bergshoeff, E A, Gran, U G, Linares, R, Nielsen, M, Ortín, T, Roest, D
We perform the generalised dimensional reduction of D=11 supergravity over three-dimensional group manifolds as classified by Bianchi. Thus, we construct eleven different maximal D=8 gauged...
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...
Supersymmetric non-abelian Born-Infeld revisited (2001)
Bergshoeff, E. A., Bilal, A., De Roo, M., Sevrin, A.
We determine the non-abelian Born-Infeld action, including fermions, as it results from the four-point tree-level open superstring scattering amplitudes at order alpha'^2. We find that, after an...
On the Supersymmetric non-Abelian Born-Infeld Action (2001)
Roo, M. De, Bergshoeff, E.A., Sevrin, A.
We review an iterative construction of the supersymmetric non-abelian Born-Infeld action. We obtain the action through second order in the fieldstrength. Kappa-invariance fixes the ordenings which...
Towards a Supersymmetric Non-Abelian Born-Infeld Theory (2001)
Roo, M. De, Bergshoeff, E.A., Sevrin, A.
We define an iterative procedure to obtain a non-abelian generalization of the Born-Infeld action. This construction is made possible by the use of the severe restrictions imposed by kappa-symmetry....
Non-Abelian Born–Infeld and kappa-symmetry (2001)
Sevrin, A., Roo, M. De, Bergshoeff, E.A.
We define an iterative procedure to obtain a non-Abelian generalization of the Born–Infeld action. This construction is made possible by the use of the severe restrictions imposed by...
On the Supersymmetric Non-Abelian Born-Infeld Action (2001)
Roo, M. De, Bergshoeff, E.A., Sevrin, A.
We review an iterative construction of the supersymmetric non-abelian Born-Infeld action. We obtain the action through second order in the fieldstrength. Kappa-invariance fixes the ordenings which...
On the supersymmetric non-abelian Born-Infeld action (2000)
Bergshoeff, E. A., De Roo, M., Sevrin, A.
We review an iterative construction of the supersymmetric non-abelian Born-Infeld action. We obtain the action through second order in the fieldstrength. Kappa-invariance fixes the ordenings which...
Non-abelian Born-Infeld and kappa-symmetry (2000)
Bergshoeff, E. A., De Roo, M., Sevrin, A.
We define an iterative procedure to obtain a non-abelian generalization of the Born-Infeld action. This construction is made possible by the use of the severe restrictions imposed by kappa-symmetry....
Supersymmetry in Singular Spaces (2000)
Bergshoeff, E A, Kallosh, Renata E, Van Proeyen, A
We develop the concept of supersymmetry in singular spaces, apply it in an example for 3-branes in D=5 and comment on 8-branes in D=10. The new construction has an interpretation that the brane is a...
Supersymmetry in Singular Spaces (2000)
Kallosh, R., Bergshoeff, E. A., Proeyen, A. Van
Published in: J. High Energy Phys. 10 (2000) 033 citations recorded in [Science Citation Index] Abstract: We develop the concept of supersymmetry in singular spaces, apply it in an example for...
T-duality and Actions for Non-BPS D-branes (2000)
Bergshoeff, E. A., De Roo, M., De Wit, T. C., Eyras, E., Panda, S.
We employ T-duality to restrict the tachyon dependence of effective actions for non-BPS D-branes. For the Born-Infeld part the criteria of T-duality and supersymmetry are satisfied by a simple...
Properties of p-Branes, D-Branes and M-Branes (1998)
In these lectures I will discuss some basic properties of p-brane, D-brane and M-brane solutions corresponding to supergravity theories in ten and eleven dimensions. In the first lecture I will...
Kaluza-Klein Monopoles and Gauged Sigma Models (1998)
We review some aspects of branes. In particular, we discuss the worldvolume theory describing the dynamics of the Kaluza-Klein monopole which turns out to be a gauged sigma model. We also briefly...
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....
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...
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...
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...
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...
Supersymmetric string waves (1993)
Kallosh, R., Bergshoeff, E.A., Ortín, T.
We present plane-wave-type solutions of the lowest-order superstring effective action which have unbroken space-time supersymmetries. They are given by a stringy generalization of the Brinkmann...
Supersymmetric String Waves (1992)
Bergshoeff, E. A., Kallosh, R., Ortin, T.
We present plane-wave-type solutions of the lowest order superstring effective action which have unbroken space-time supersymmetries. They describe dilaton, axion and gauge fields in a stringy...
A derivation of the BRST operator for non-critical W-strings (1992)
Bergshoeff, E A, Sevrin, A, Shen, X
We derive the recently proposed BRST charge for non-critical W strings from a Lagragian approach. The basic observation is that, despite appearances, the combination of two classical ``matter'' and...
Light-like integrability in loop superspace, Kac-Moody central charges and Chern-Simons terms (1991)
Ten-dimensional supergravity from light-like integrability in loop superspace (1990)
Bergshoeff, E A, Howe, Paul S, Pope, C N, Sezgin, E, Sokatchev, Emery S
BRST1 quantization of the Green-Schwarz superstring (1990)
Bergshoeff, E.A., Kallosh, R.E.
We apply a one-step Noether extended BRST procedure (BRST1 procedure) to quantize the Green-Schwarz heterotic string. The gauge fixed action is presented in a wide class of gauges including the...
The string effective action in the dual formulation of D=10 supergravity (1990)
We construct the quartic effective action for the heterotic string using the dual formulation of d=10, N=1 supergravity. We find that the symmetry between the Yang-Mills and gravity sectors which was...
Duality transformations of string effective actions (1990)
We show that the duality transformation relating the two versions of d=10, N=1 supergravity can be extended iteratively to the string effective actions and supersymmetry transformation rules. We...
The cohomology of the Brink-Schwarz superparticle (1990)
Kallosh, R., Bergshoeff, E.A., Proeyen, A. Van
We show that the covariantly gauge-fixed action of the ten-dimensional Brink-Schwarz superparticle has a fermionic, nilpotent symmetry whose cohomology is given by the (8+8)-supersymmetric Yang-Mills...
The quartic effective action of the heterotic string and supersymmetry (1989)
We present the supersymmetric quartic effective action for the heterotic string which follows from the supersymmetrization of the Yang-Mills and Lorentz Chern-Simons forms. This includes all bosonic...
Singlets of fermionic gauge symmetries (1989)
Kallosh, R.E., Bergshoeff, E.A., Rahmanov, M.A.
We investigate under which conditions singlets of fermionic gauge symmetries which are "square roots of gravity" can exist. Their existence is non-trivial because there are no fields neutral in...
Superconformal aspects of d = 11 supergravity (1984)
We discuss superconformal aspects of supergravity in eleven dimensions. We suggest that the Poincaré theory is obtained by a compensating mechanism using a scalar superfield.
E10 and gauged maximal supergravity
Bergshoeff, E.A., Hohm, Olaf, Kleinschmidt, Axel, Nicolai, Hermann, Nutma, T.A., Palmkvist, Jakob
We compare the dynamics of maximal three-dimensional gauged supergravity in appropriate truncations with the equations of motion that follow from a one-dimensional E10/K(E10) coset model at the first...