G-Warm inflation

Abstract

A warm inflationary universe in the context of Galileon model or G-model is studied. Under a general formalism we study the inflationary dynamics and the cosmological perturbations considering a coupling of the form $G(\varphi ,X)=g(\varphi )X$. As a concrete example, we consider an exponential potential together with the cases in which the dissipation and Galilean coefficients are constants. Also, we study the weak regime given by the condition $R<1+3gH\dot{\varphi }$, and the strong regime in which $1<R+3gH\dot{\varphi }$.Additionally, we obtain constraints on the parameters during the evolution of G-warm inflation, assuming the condition for warm inflation in which the temperature $T>H$, the conditions for the weak and strong regimes, together with the consistency relation $r=r(n_s)$ from Planck data.

23 pages, 4 figures, Accepted for publication in JCAP

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Cited by in corpus (15)

• Warm inflation as a way out of the swampland
• Constraining Warm Inflation with CMB data
• Warm brane inflation with an exponential potential: A consistent realization away from the swampland
• The warm inflation story
• Dynamical and observational constraints on the Warm Little Inflaton scenario
• Reconstructing warm inflation
• Irreversible thermodynamical description of warm inflationary cosmological models
• Power spectra in warm G-inflation and its consistency: stochastic approach
• Reconstructing G-inflation: From the attractors $n_S(N)$ and $r(N)$
• G-inflation: From the intermediate, logamediate and exponential models
• Warm Higgs G-inflation: predictions and constraints from Planck 2015 likelihood
• Warm inflation with non-comoving scalar field and radiation fluid
• Primordial Black Holes Dark Matter and Secondary Gravitational Waves from Warm Higgs-G Inflation
• Trans-Planckian Effects in Warm Inflation
• G-Warm inflation: Intermediate model