200 citations · 3.7k across the 76 of their papers we have counts for
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Not So Minimal Warm Inflation
Mar Bastero-Gil, Pedro García Osorio, António Torres Manso
An axion-like inflaton coupled to non-Abelian gauge bosons provides a compelling microphysical framework for warm inflation. Starting even from cold initial conditions, in these sy…
Super heavy dark matter from inflationary Schwinger production
Mar Bastero-Gil, Paulo B. Ferraz, Lorenzo Ubaldi +1
We consider a simple setup with a dark sector containing dark electrons charged under an abelian gauge symmetry. We show that if the massless dark photon associated to the…
New solar X-ray constraints on keV Axion-Like Particles
Cyprien Beaufort, Mar Bastero-Gil, Tiffany Luce +1
The decay of Axion-Like Particles (ALPs) trapped in the solar gravitational field would contribute to the observed solar X-ray flux, hence constraining ALP models. We improve by on…
Thermal curvature perturbations in thermal inflation
Mar Bastero-Gil, Joaquim M. Gomes, João G. Rosa
We compute the power spectrum of super-horizon curvature perturbations generated during a late period of thermal inflation, taking into account fluctuation-dissipation effects resu…
Solar axions in large extra dimensions
Mar Bastero-Gil, Cyprien Beaufort, Daniel Santos
The axion could be used as a probe for extra dimensions. In large extra dimensions, besides the QCD axion one obtains an infinite tower of massive Kaluza-Klein (KK) states. We desc…
Gravity Waves and Primordial Black Holes in Scalar Warm Little Inflation
Mar Bastero-Gil, Marta Subías Díaz-Blanco
In warm inflation, dissipation due to the interactions of the inflaton field to other light degrees of freedom leads naturally to the enhancement of the primordial spectrum during…
Dark photon dark matter from a rolling inflaton
Mar Bastero-Gil, Jose Santiago, Lorenzo Ubaldi +1
We study in detail a recently proposed mechanism for producing non-thermal dark photon dark matter at the end of inflation in the mass range $μ\,{\rm eV} \lesssim m \lesssim 10\,{\…
Supersymmetric -Inflaton Dark Matter
Mar Bastero-Gil, António Torres Manso
We present the supersymmetric extension of the unified model for inflation and Dark Matter studied in Ref. arXiv:1811.02302. The scenario is based on the incomplete decay of the in…
Towards a reliable effective field theory of inflation
Mar Bastero-Gil, Arjun Berera, Rudnei O. Ramos +1
We present the first quantum field theory model of inflation that is renormalizable in the matter sector, with a super-Hubble inflaton mass and sub-Planckian field excursions, whic…
Warm inflation within a supersymmetric distributed mass model
Mar Bastero-Gil, Arjun Berera, Rafael Hernández-Jiménez +1
We study the dynamics and observational predictions of warm inflation within a supersymmetric distributed mass model. This dissipative mechanism is well described by the interactio…
Vector dark matter production at the end of inflation
Mar Bastero-Gil, Jose Santiago, Lorenzo Ubaldi +1
It has been shown that the longitudinal mode of a massive vector boson can be produced by inflationary fluctuations and account for the dark matter content of the Universe. In this…
Adiabatic out-of-equilibrium solutions to the Boltzmann equation in warm inflation
Mar Bastero-Gil, Arjun Berera, Rudnei O. Ramos +1
We show that, in warm inflation, the nearly constant Hubble rate and temperature lead to an adiabatic evolution of the number density of particles interacting with the thermal bath…
Warm Little Inflaton
Mar Bastero-Gil, Arjun Berera, Rudnei O. Ramos +1
We show that inflation can naturally occur at a finite temperature T>H that is sustained by dissipative effects, when the inflaton field corresponds to a pseudo Nambu-Goldstone bos…
Exploring the Parameter Space of Warm-Inflation Models
Mar Bastero-Gil, Arjun Berera, Nico Kronberg
Warm inflation includes inflaton interactions with other fields throughout the inflationary epoch instead of confining such interactions to a distinct reheating era. Previous inves…
Inflaton dark matter from incomplete decay
Mar Bastero-Gil, Rafael Cerezo, Joao G. Rosa
We show that the decay of the inflaton field may be incomplete, while nevertheless successfully reheating the universe and leaving a stable remnant that accounts for the present da…
Delaying the waterfall transition in warm hybrid inflation
Mar Bastero-Gil, Arjun Berera, Thomas P. Metcalf +1
We analyze the dynamics and observational predictions of supersymmetric hybrid inflation in the warm regime, where dissipative effects are mediated by the waterfall fields and thei…
The importance of being warm (during inflation)
Sam Bartrum, Mar Bastero-Gil, Arjun Berera +3
The amplitude of primordial curvature perturbations is enhanced when a radiation bath at a temperature T>H is sustained during inflation by dissipative particle production, which i…
General dissipation coefficient in low-temperature warm inflation
Mar Bastero-Gil, Arjun Berera, Rudnei O. Ramos +1
In generic particle physics models, the inflaton field is coupled to other bosonic and fermionic fields that acquire large masses during inflation and may decay into light degrees…
Warm baryogenesis
Mar Bastero-Gil, Arjun Berera, Rudnei O. Ramos +1
We show that a baryon asymmetry can be generated by dissipative effects during warm inflation via a supersymmetric two-stage mechanism, where the inflaton is coupled to heavy media…
The gravitino problem in supersymmetric warm inflation
Juan C. Bueno Sanchez, Mar Bastero-Gil, Arjun Berera +2
The warm inflation paradigm considers the continuous production of radiation during inflation due to dissipative effects. In its strong dissipation limit, warm inflation gives way…
Dissipation coefficients from scalar and fermion quantum field interactions
Mar Bastero-Gil, Arjun Berera, Rudnei O. Ramos
Dissipation coefficients are calculated in the adiabatic, near thermal equilibrium regime for a large class of renormalizable interaction configurations involving a two-stage mecha…
Power suppression from disparate mass scales in effective scalar field theories of inflation and quintessence
Mar Bastero-Gil, Arjun Berera, Brendan M. Jackson
A scalar potential coupled to other fields of large disparate masses will exhibit power suppression of the quantum loop corrections from these massive fields. Quintessence fields i…
Gauge Non-Singlet Inflation in SUSY GUTs
Stefan Antusch, Mar Bastero-Gil, Jochen P. Baumann +3
We explore the novel possibility that the inflaton responsible for cosmological inflation is a gauge non-singlet in supersymmetric (SUSY) Grand Unified Theories (GUTs). For definit…
Hybrid Quintessential Inflation
Mar Bastero-Gil, Arjun Berera, Brendan M. Jackson +1
A model is presented in which a single scalar field is responsible for both primordial inflation at early times and then dark energy at late times. This field is coupled to a secon…