Non-Extremal D-instantons and the AdS/CFT Correspondence (2005)
Bergshoeff, E., Collinucci, A., Ploegh, A., Vandoren, S., Van Riet, T.
We investigate non-extremal D-instantons in an asymptotically $ AdS_5 \times S^5$ background and the role they play in the $ AdS_5 / CFT_4$ correspondence. We find that the holographic dual operators...
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...
Non-extremal instantons and wormholes in string theory (2005)
Roest, D., Gran, U., Collinucci, A., Bergshoeff, E., Vandoren, S.
We construct the most general non-extremal spherically symmetric instanton solution of a gravity-dilaton-axion system with SL(2,R) symmetry, for arbitrary euclidean spacetime dimension D ≥ 3. A...
Non-extremal D-instantons and the AdS/CFT correspondence (2005)
Bergshoeff, E., Collinucci, A., Ploegh, A., Vandoren, S., Riet, T. Van
We investigate non-extremal D-instantons in an asymptotically AdS5 × S5 background and the role they play in the AdS5/CFT4 correspondence. We find that the holographic dual operators of non-extremal...
Non-extremal instantons and wormholes in string theory (2004)
Bergshoeff, E., Collinucci, A., Gran, U., Roest, D., Vandoren, S.
We construct the most general non-extremal spherically symmetric instanton solution of a gravity-dilaton-axion system with $SL(2,R)$ symmetry, for arbitrary euclidean spacetime dimension $D\geq 3$. A...
Non-extremal D-instantons (2004)
Bergshoeff, E., Collinucci, A., Gran, U., Roest, D., Vandoren, S.
We construct the most general non-extremal deformation of the D-instanton solution with maximal rotational symmetry. The general non-supersymmetric solution carries electric charges of the SL(2,R)...
Transient quintessence from group manifold reductions or how all roads lead to Rome (2004)
Gran, U., Collinucci, A., Bergshoeff, E., Nielsen, M., Roest, D.
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 trajectories on a sphere...
Non-extremal instantons and wormholes in string theory (2004)
Bergshoeff, E., Collinucci, A., Gran, U., Roest, D., Vandoren, S.
We construct the most general non-extremal spherically symmetric instanton solution of a gravity-dilaton-axion system with SL(2,R) symmetry, for arbitrary euclidean spacetime dimension D ≥ 3. A...
Non-extremal D-instantons (2004)
Bergshoeff, E., Collinucci, A., Gran, U., Roest, D., Vandoren, S.
We construct the most general non-extremal deformation of the D-instanton solution with maximal rotational symmetry. The general non-supersymmetric solution carries electric charges of the SL(2,R)...
Supersymmetric Yang-Mills theory at order alpha'^3 (2002)
Collinucci, A., De Roo, M., Eenink, M. G. C.
We construct the order alpha'^3 terms in the supersymmetric Yang-Mills action in ten dimensions for an arbitrary gauge group. The result can be expressed in terms of the structure constants of the...