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arXiv · 1801.05138

Reconstructing warm inflation

Ramon Herrera
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Abstract

The reconstruction of a warm inflationary universe model from the scalar spectral index $n_S(N)$ and the tensor to scalar ratio $r(N)$ as a function of the number of e-folds $N$ is studied. Under a general formalism we find the effective potential and the dissipative coefficient in terms of the cosmological parameters $n_S$ and $r$ considering the weak and strong dissipative stages under the slow roll approximation. As a specific example, we study the attractors for the index $n_S$ given by $n_{S}-1\propto N^{-1}$ and for the ratio $r\propto N^{-2}$, in order to reconstruct the model of warm inflation. Here, expressions for the effective potential $V(ϕ)$ and the dissipation coefficient $Γ(ϕ)$ are obtained.

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Ramon Herrera. 2018-01-22. Reconstructing warm inflation. https://doi.org/10.1140/epjc%2Fs10052-018-5741-0

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