200 citations · 3.7k across the 76 of their papers we have counts for
12 papers · 1 filter
Non-thermal moduli production during preheating in -attractor inflation models
Khursid Alam, Mar Bastero-Gil, Koushik Dutta +1
Production of gravitationally coupled light moduli fields must be suppressed in the early universe, so that its decay products do not alter Big Bang Nucleosynthesis (BBN) predictio…
Reexamination of the warm inflation curvature perturbations spectrum
Mar Bastero-Gil, Arjun Berera, Jaime R. Calderón
The two approaches to compute perturbations in warm inflation are examined. It is shown that both approaches lead to different expressions for the amplitude of the primordial spect…
Dynamical and observational constraints on the Warm Little Inflaton scenario
Mar Bastero-Gil, Arjun Berera, Rafael Hernandez-Jimenez +1
We explore the dynamics and observational predictions of the Warm Little Inflaton scenario, presently the simplest realization of warm inflation within a concrete quantum field the…
Constraining Warm Inflation with CMB data
Mar Bastero-Gil, Sukannya Bhattacharya, Koushik Dutta +1
We confront the warm inflation observational predictions directly with the latest CMB data. We focus on a linear temperature (T) dissipative coefficient combined with the simplest…
The role of fluctuation-dissipation dynamics in setting initial conditions for inflation
Mar Bastero-Gil, Arjun Berera, Robert Brandenberger +3
We study the problem of initial conditions for slow-roll inflation along a plateau-like scalar potential within the framework of fluctuation-dissipation dynamics. We consider, in p…
Theory of non-Gaussianity in warm inflation
Mar Bastero-Gil, Arjun Berera, Ian G. Moss +1
The theory and methodology is developed to compute the bispectrum in warm inflation, leading to results for the non-linearity parameter and the shape of the bispectrum. Particular…
Observational implications of mattergenesis during inflation
Mar Bastero-Gil, Arjun Berera, Rudnei O. Ramos +1
The observed baryon asymmetry, as well as potentially an asymmetry in the dark matter sector, can be produced through dissipative particle production during inflation. A distinctiv…
Cosmological fluctuations of a random field and radiation fluid
Mar Bastero-Gil, Arjun Berera, Ian G. Moss +1
A generalization of the random fluid hydrodynamic fluctuation theory due to Landau and Lifshitz is applied to describe cosmological fluctuations in systems with radiation and scala…
On the power spectrum generated during inflation
Mar Bastero-Gil, Arjun Berera, Namit Mahajan +1
Recently there have been differing viewpoints on how to evaluate the curvature power spectrum generated during inflation. Since the primordial curvature power spectrum is the seed…
Stability analysis for the background equations for inflation with dissipation and in a viscous radiation bath
Mar Bastero-Gil, Arjun Berera, Rafael Cerezo +2
The effects of bulk viscosity are examined for inflationary dynamics in which dissipation and thermalization are present. A complete stability analysis is done for the background i…
Shear viscous effects on the primordial power spectrum from warm inflation
M. Bastero-Gil, A. Berera, R. O. Ramos
We compute the primordial curvature spectrum generated during warm inflation, including shear viscous effects. The primordial spectrum is dominated by the thermal fluctuations of t…
Towards Realizing Warm Inflation in String Theory
Mar Bastero-Gil, Arjun Berera, James B. Dent +1
We give a generic argument that string theory provides a natural setting for warm inflationary cosmology. We then explore a specific model with an inflaton modulus field coupled to…