76 citations · 349 across the 14 of their papers we have counts for
5 papers · 1 filter
Non-extremal instantons and wormholes in string theory
E. Bergshoeff, A. Collinucci, U. Gran +2
We construct the most general non-extremal spherically symmetric instanton solution of a gravity-dilaton-axion system with symmetry, for arbitrary euclidean spacetime dim…
The spinorial geometry of supersymmetric backgrounds
Joe Gillard, Ulf Gran, George Papadopoulos
We propose a new method to solve the Killing spinor equations of eleven-dimensional supergravity based on a description of spinors in terms of forms and on the Spin(1,10) gauge sym…
Supersymmetric Corrections to Eleven-Dimensional Supergravity
Martin Cederwall, Ulf Gran, Bengt E. W. Nilsson +1
In this paper we study eleven-dimensional supergravity in its most general form. This is done by implementing manifest supersymmetry (and Lorentz invariance) through the use of the…
Non-extremal D-instantons
E. Bergshoeff, A. Collinucci, U. Gran +2
We construct the most general non-extremal deformation of the D-instanton solution with maximal rotational symmetry. The general non-supersymmetric solution carries electric charge…
Transient Quintessence from Group Manifold Reductions or how all roads lead to Rome
Eric Bergshoeff, Andres Collinucci, Ulf Gran +2
We investigate the accelerating phases of cosmologies supported by a metric, scalars and a single exponential scalar potential. The different solutions can be represented by trajec…