374 citations · 6.3k across the 173 of their papers we have counts for
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Clustering properties of a sterile neutrino dark matter candidate
D. Boyanovsky
The clustering properties of sterile neutrinos are studied within an extension of the minimal standard model, where these are produced via the decay of a gauge singlet scalar. The…
The dark matter transfer function: free streaming, particle statistics and memory of gravitational clustering
D. Boyanovsky, H. J. de Vega, N. Sanchez
The transfer function of dark matter (DM) perturbations during matter domination is obtained by solving the collisionless Boltzmann-Vlasov equation. We find an \emph{exact}…
Free streaming in mixed dark matter
Daniel Boyanovsky
Free streaming in a \emph{mixture} of collisionless non-relativistic dark matter (DM) particles is studied by implementing methods from the theory of multicomponent plasmas. The mi…
Constraints on dark matter particles from theory, galaxy observations and N-body simulations
D. Boyanovsky, H. J. de Vega, N. Sanchez
Mass bounds on dark matter (DM) candidates are obtained for particles decoupling in or out of equilibrium with {\bf arbitrary} isotropic and homogeneous distribution functions. A c…
New Inflation vs. Chaotic Inflation, Higher Degree Potentials and the Reconstruction Program in light of WMAP3
D. Boyanovsky, H. J. de Vega, C. M. Ho +1
The CMB power spectra are studied for different families of single field new and chaotic inflation models in the effective field theory approach to inflation. We implement a system…
CMB quadrupole suppression: I. Initial conditions of inflationary perturbations
D. Boyanovsky, H. J. de Vega, N. G. Sanchez
We investigate the issue of initial conditions of curvature and tensor perturba- tions at the beginning of slow roll inflation and their effect on the power spectra. Renormalizabil…
CMB quadrupole suppression: II. The early fast roll stage
D. Boyanovsky, H. J. de Vega, N. G. Sanchez
Within the effective field theory of inflation, an initialization of the classical dynamics of the inflaton with approximate equipartition between the kinetic and potential energy…
Clarifying Slow Roll Inflation and the Quantum Corrections to the Observable Power Spectra
D. Boyanovsky, H. J. de Vega, N. G. Sanchez
Slow-roll inflation can be studied as an effective field theory. The form of the inflaton potential consistent with the data is V(phi) = N M^4 w(phi/[sqrt{N} M_{Pl}]) where phi is…
Quantum corrections to the inflaton potential and the power spectra from superhorizon modes and trace anomalies
D. Boyanovsky, H. J. de Vega, N. G. Sanchez
We obtain the effective inflaton potential during slow roll inflation by including the one loop quantum corrections to the energy momentum tensor from scalar curvature and tensor p…
Clarifying Inflation Models: Slow-roll as an expansion in 1/N_{efolds}
D. Boyanovsky, H. J. de Vega, N. G. Sanchez
Slow-roll inflation is studied as an effective field theory.We find as consistent form of the inflaton potential V(phi)=N M^4 w(phi/[sqrt{N}M_P]) where phi is the inflaton field, M…
The Classical and Quantum Inflaton: the Precise Inflationary Potential and Quantum Inflaton Decay after WMAP
D. Boyanovsky, H. J. de Vega, N. G. Sanchez
We clarify classical inflaton models by considering them as effective field theories `a la Ginzburg-Landau. In this approach, the WMAP statement excluding the pure phi^4 potential…
Quantum corrections to slow roll inflation and new scaling of superhorizon fluctuations
D. Boyanovsky, H. J. de Vega, N. G. Sanchez
Precise cosmological data from WMAP and forthcoming CMB experiments motivate the study of the quantum corrections to the slowroll inflationary parameters.We find the quantum (loop)…
Primordial Magnetic Fields from Out of Equilibrium Cosmological Phase Transitions
D. Boyanovsky, H. J. de Vega
The universe cools down monotonically following its expansion.This generates a sequence of phase transitions. If a second order phase transition happens during the radiation domina…
Particle decay during inflation: self-decay of inflaton quantum fluctuations during slow roll
D. Boyanovsky, H. J. de Vega, N. G. Sanchez
Particle decay during inflation is studied by implementing a dynamical renormalization group resummation combined with a small Delta expansion. Delta measures the deviation from th…
Particle decay in inflationary cosmology
D. Boyanovsky, H. J. de Vega
We investigate the relaxation and decay of a particle during inflation by implementing the dynamical renormalization group. This investigation allows us to give a meaningful defini…
Primordial magnetic fields from cosmological phase transitions
D. Boyanovsky, H. J. de Vega, M. Simionato
We study the generation of large scale primordial magnetic fields by a cosmological phase transition during the radiation dominated era. The setting is a theory of N charged scalar…
Inflation from Tsunami-waves
D. Boyanovsky, F. J. Cao, H. J. de Vega
We investigate inflation driven by the evolution of highly excited quantum states within the framework of out of equilibrium field dynamics. These states are characterized by a non…
Out of Equilibrium Fields in Self-consistent Inflationary Dynamics. Density Fluctuations
D. Boyanovsky, H. J. de Vega
The physics during the inflationary stage of the universe is of quantum nature involving extremely high energy densities. Moreover, it is out of equilibrium on a fastly expanding d…
Self-Consistent Dynamics of Inflationary Phase Transitions
D. Boyanovsky, D. Cormier, H. J. de Vega +2
The physics of the inflationary universe requires the study of the out of equilibrium evolution of quantum fields in curved spacetime. We present the evolution for both the geometr…
Preheating and Reheating in Inflationary Cosmology: a pedagogical survey
D. Boyanovsky, H. J. de Vega, R. Holman +1
Recent progress in the preheating phenomena for inflationary cosmology is reviewed. We first discuss estimates of the preheating time scale and particle production at the early sta…