Jan Rosseel
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Jan Rosseel has a total of 2 co-authors. Here are the top co-authors by number of shared publications:
- Dennis B. Westra
Centre for Theoretical Physics University of Groningen Nijenborgh 4 9747 AG Groningen The Netherlands
1 shared publication - Thomas Van Riet
Centre for Theoretical Physics University of Groningen Nijenborgh 4 9747 AG Groningen The Netherlands
1 shared publication
Latest Publications
- Open Access
Scaling Cosmologies of N=8 Gauged Supergravity
We construct exact cosmological scaling solutions in N=8 gauged supergravity. We restrict to solutions for which the scalar fields trace out geodesic curves on the scalar manifold. Under these restrictions it is shown that the axionic scalars are necessarily constant. The potential is then a sum of exponentials and has a very specific form that allows for scaling solutions. The scaling solutions describe eternal accelerating and decelerating power-law universes, which are all unstable. An uplift of the solutions to 11-dimensional supergravity is carried out and the resulting timedependent geometries are discussed. In the discussion we briefly comment on the fact that N=2 gauged supergravity allows stable scaling solutions.
Open AccessScaling Cosmologies of N=8 Gauged Supergravity
We construct exact cosmological scaling solutions in N=8 gauged supergravity. We restrict to solutions for which the scalar fields trace out geodesic curves on the scalar manifold. Under these restrictions it is shown that the axionic scalars are necessarily constant. The potential is then a sum of exponentials and has a very specific form that allows for scaling solutions. The scaling solutions describe eternal accelerating and decelerating power-law universes, which are all unstable. An uplift of the solutions to 11-dimensional supergravity is carried out and the resulting timedependent geometries are discussed. In the discussion we briefly comment on the fact that N=2 gauged supergravity allows stable scaling solutions.