Scaling cosmologies, geodesic motion and pseudo-susy
| dc.creator | Chemissany, Wissam | |
| dc.creator | ploegh, André | |
| dc.creator | Van Riet, Thomas | |
| dc.date | 2007-04-12 | |
| dc.date | 2007-08-17 | |
| dc.date.accessioned | 2026-07-07T11:56:34Z | |
| dc.date.available | 2026-07-07T11:56:34Z | |
| dc.description | One-parameter solutions in supergravity carried by scalars and a metric trace out curves on the scalar manifold. In ungauged supergravity these curves describe a geodesic motion. It is known that a geodesic motion sometimes occurs in the presence of a scalar potential and for time-dependent solutions this can happen for scaling cosmologies. This note contains a further study of such solutions in the context of pseudo-supersymmetry for multi-field systems whose first-order equations we derive using a Bogomol'nyi-like method. In particular we show that scaling solutions that are pseudo-BPS must describe geodesic curves. Furthermore, we clarify how to solve the geodesic equations of motion when the scalar manifold is a maximally non-compact coset such as occurs in maximal supergravity. This relies upon a parametrization of the coset in the Borel gauge. We then illustrate this with the cosmological solutions of higher-dimensional gravity compactified on a $n$-torus. | |
| dc.description | 14 pages, slight change in title, references added, typos corrected. Version accepted for publication in Class. Quantum Grav | |
| dc.identifier | https://arxiv.org/abs/0704.1653 | |
| dc.identifier | http://arxiv.org/abs/0704.1653 | |
| dc.identifier | Class.Quant.Grav.24:4679-4690,2007 | |
| dc.identifier | doi:10.1088/0264-9381/24/18/009 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/205580 | |
| dc.subject | High Energy Physics - Theory | |
| dc.subject | Astrophysics | |
| dc.title | Scaling cosmologies, geodesic motion and pseudo-susy | |
| dc.type | text |