The Cosmology of a Universe with Spontaneously-Broken Lorentz Symmetry
| dc.creator | Ferreira, P. G. | |
| dc.creator | Gripaios, B. M. | |
| dc.creator | Saffari, R. | |
| dc.creator | Zlosnik, T. G. | |
| dc.date | 2006-10-04 | |
| dc.date.accessioned | 2026-07-07T10:23:46Z | |
| dc.date.available | 2026-07-07T10:23:46Z | |
| dc.description | A self consistent effective field theory of modified gravity has recently been proposed with spontaneous breaking of local Lorentz invariance. The symmetry is broken by a vector field with the wrong-sign mass term and it has been shown to have additional graviton modes and modified dispersion relations. In this paper we study the evolution of a homogeneous and isotropic universe in the presence of such a vector field with a minimum lying along the time-like direction. A plethora of different regimes is identified, such as accelerated expansion, loitering, collapse and tracking. | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0610125 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0610125 | |
| dc.identifier | Phys.Rev.D75:044014,2007 | |
| dc.identifier | doi:10.1103/PhysRevD.75.044014 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/175953 | |
| dc.subject | Astrophysics | |
| dc.title | The Cosmology of a Universe with Spontaneously-Broken Lorentz Symmetry | |
| dc.type | text |