Particle production in the oscillating inflation model
| dc.creator | Tsujikawa, S. | |
| dc.date | 2000-03-26 | |
| dc.date.accessioned | 2026-07-07T11:34:59Z | |
| dc.date.available | 2026-07-07T11:34:59Z | |
| dc.description | We investigate the particle production of a scalar field $χ$ coupled to an inflaton field $ϕ$ ($g^2ϕ^2χ^2/2$) in the {\it oscillating inflation} model, which was recently proposed by Damour and Mukhanov. Although the fluctuation of the $ϕ$ field can be effectively enhanced during a stage of the oscillating inflation, the maximum fluctuation is suppressed as the critical value $ϕ_c$ which indicates the scale of the core part of the inflaton potential decreases, in taking into account the back reaction effect of created particles. As for the $χ$ particle production, we find that larger values of the coupling constant $g$ are required to lead to an efficient parametric resonance with the decrease of $ϕ_c$, because an effective mass of inflaton around the minimum of its potential becomes larger. However, it is possible to generate the superheavy $χ$ particle whose mass is greater than $10^{14}$ GeV, which would result in an important consequence for the GUT baryogenesis. | |
| dc.description | 18 pages, 14 figures | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0003252 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0003252 | |
| dc.identifier | Phys.Rev.D61:083516,2000 | |
| dc.identifier | doi:10.1103/PhysRevD.61.083516 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/198448 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.subject | Astrophysics | |
| dc.subject | General Relativity and Quantum Cosmology | |
| dc.subject | High Energy Physics - Theory | |
| dc.title | Particle production in the oscillating inflation model | |
| dc.type | text |