Equilibrium boundary conditions, dynamic vacuum energy, and the Big Bang
| dc.creator | Klinkhamer, F. R. | |
| dc.date | 2008-03-03 | |
| dc.date | 2008-10-25 | |
| dc.date.accessioned | 2026-07-07T11:48:52Z | |
| dc.date.available | 2026-07-07T11:48:52Z | |
| dc.description | The near-zero value of the cosmological constant Λin an equilibrium context may be due to the existence of a self-tuning relativistic vacuum variable q. Here, a cosmological nonequilibrium context is considered with a corresponding time-dependent cosmological parameter Λ(t) or vacuum energy density ρ_V(t). A specific model of a closed Friedmann-Robertson-Walker universe is presented, which is determined by equilibrium boundary conditions at one instant of time (t=t_{eq}) and a particular form of vacuum-energy dynamics (dρ_V/dt \propto ρ_M). This homogeneous and isotropic model has a standard Big Bang phase at early times (t << t_{eq}) and reproduces the main characteristics of the present universe (t=t_0 < t_{eq}). | |
| dc.description | 20 pages with revtex4; v7: published version in preprint style | |
| dc.identifier | https://arxiv.org/abs/0803.0281 | |
| dc.identifier | http://arxiv.org/abs/0803.0281 | |
| dc.identifier | Phys.Rev.D78:083533,2008 | |
| dc.identifier | doi:10.1103/PhysRevD.78.083533 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/203031 | |
| dc.subject | General Relativity and Quantum Cosmology | |
| dc.subject | Astrophysics | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Equilibrium boundary conditions, dynamic vacuum energy, and the Big Bang | |
| dc.type | text |