Gravitational Waves From the End of Inflation: Computational Strategies
| dc.creator | Easther, Richard | |
| dc.creator | Giblin Jr, John T. | |
| dc.creator | Lim, Eugene A. | |
| dc.date | 2007-12-18 | |
| dc.date.accessioned | 2026-07-07T11:39:30Z | |
| dc.date.available | 2026-07-07T11:39:30Z | |
| dc.description | Parametric resonance or preheating is a plausible mechanism for bringing about the transition between the inflationary phase and a hot, radiation dominated universe. This epoch results in the rapid production of heavy particles far from thermal equilibrium and could source a significant stochastic background of gravitational radiation. Here, we present a numerical algorithm for computing the contemporary power spectrum of gravity waves generated in this post-inflationary phase transition for a large class of scalar-field driven inflationary models. We explicitly calculate this spectrum for both quartic and quadratic models of chaotic inflation, and low-scale hybrid models. In particular, we consider hybrid models with an ``inverted'' potential. These models have a very short and intense period of resonance which is qualitatively different from previous examples studied in this context, but we find that they lead to a similar spectrum of gravitational radiation. | |
| dc.description | 15 pages, 13 figures | |
| dc.identifier | https://arxiv.org/abs/0712.2991 | |
| dc.identifier | http://arxiv.org/abs/0712.2991 | |
| dc.identifier | Phys.Rev.D77:103519,2008 | |
| dc.identifier | doi:10.1103/PhysRevD.77.103519 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/199942 | |
| dc.subject | Astrophysics | |
| dc.title | Gravitational Waves From the End of Inflation: Computational Strategies | |
| dc.type | text |