Extended Warm Inflation
نویسندگان
چکیده
A bidimensional parameter space of unitary area is introduced to study phenomenologically the dynamic and thermodynamic behavior of inflationary models driven by a scalar field coupled to a thermal component. In this enlarged context the isentropic and warm pictures are just extreme cases of an infinite two-parametric family of possible inflationary scenarios. It is also shown that strong couplings are responsible by an alteration in the standard slow roll conditions which relax the smallness constraint on the first and the second derivatives of the potential. PACS: 98.80.Cq
منابع مشابه
Warm inflation solution to the eta-problem
Warm inflationary dynamics is shown to satisfy both the slow-roll and density perturbation constraints for mφ ≫ H or equivalently η ≫ 1 and for inflaton field amplitudes much below the Planck scale, 〈φ〉 < mpl. I start by reviewing the two types of inflation dynamics, isentropic or cold inflation and nonisentropic or warm inflation. In the former, inflation occurs without radiation production, w...
متن کاملSpontaneous baryogenesis in warm inflation
We discuss spontaneous baryogenesis in the warm inflation scenario. In contrast with standard inflation models, radiation always exists in the warm inflation scenario, and the inflaton must be directly coupled to it. Also, the transition to the post-inflationary radiation dominated phase is smooth and the entropy is not significantly increased at the end of the period of inflation. In addition,...
متن کاملWarm Inflation Dissipative Dynamics
Warm inflation dynamics is reviewed. Results on dissipative scalar field dynamics relevant to warm inflation are examined and estimates of radiation production are given.
متن کاملEvolution of the curvature perturbations during warm inflation
This paper considers warm inflation as an interesting application of multifield inflation. Delta-N formalism is used for the calculation of the evolution of the curvature perturbations during warm inflation. Although the perturbations considered in this paper are decaying after the horizon exit, the corrections to the curvature perturbations sourced by these perturbations can remain and dominat...
متن کاملWarm Inflation
Abstract: I show here that there are some interesting differences between the predictions of warm and cold inflation models focusing in particular upon the scalar spectral index ns and the tensor-to-scalar ratio r. The first thing to be noted is that the warm inflation models in general predict a vanishingly small value of r. Cold inflationary models with the potential V = M4 (φ/MP) p and a num...
متن کاملSneutrino warm inflation in the minimal supersymmetric model
The model of RH neutrino fields coupled to the MSSM is shown to yield a large parameter regime of warm inflation. In the strong dissipative regime, it is shown that inflation, driven by a single sneutrino field, occurs with all field amplitudes below the Planck scale. Analysis is also made of leptogenesis, neutrino mass generation and gravitino constraints. A new warm inflation scenario is purp...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 1999