H. J. de Vega

The Theory of Inflation as an effective theory in the Ginsburg-Landau spirit. Confrontation to Observations.
Selected papers:

D. Boyanovsky, H. J. de Vega, N. G. Sanchez, `Clarifying Inflation Models: Slow-roll as an expansion in 1/N-efolds and No Fine Tuning', Phys. Rev. D 73, 023008 (2006), astro-ph/0507595.

D. Cirigliano, H. J. de Vega, N. G. Sanchez, `Clarifying Inflation Models: the Precise Inflationary Potential from Effective Field Theory and the WMAP data', Phys. Rev. D 71, 103518 (2005), astro-ph/0412634.
D. Boyanovsky, H. J. de Vega, N. G. Sanchez, `Quantum corrections to the inflaton potential and the power spectra from superhorizon modes and trace anomalies', Phys. Rev. D 72, 103006 (2005).
D. Boyanovsky, H. J. de Vega, N. G. Sanchez, `Quantum corrections to slow roll inflation and new scaling of superhorizon fluctuations', astro-ph/0503669, Nucl. Phys. B 747, 25 (2006).
H. J. de Vega, N. G. Sanchez, `Single Field Inflation models allowed and ruled out by the three years WMAP data', Phys. Rev. D 74, 063519 (2006), astro-ph/0604136
D. Boyanovsky, H. J. de Vega, N. G. Sanchez, `CMB quadrupole suppression: I. Initial conditions of inflationary perturbations', astro-ph/0607508, Phys. Rev. D74, 123006 (2006).
D. Boyanovsky, H. J. de Vega, N. G. Sanchez, CMB quadrupole suppression: II. The early fast roll stage. astro-ph/0607487, Phys. Rev. D74, 123007 (2006).
C. Destri, H. J. de Vega, N. G. Sanchez, `MCMC analysis of WMAP3 and SDSS data points to broken symmetry inflaton potentials and provides a lower bound on the tensor to scalar ratio', astro-ph/0703417, Phys. Rev. D77, 043509 (2008).
C. Destri, H. J. de Vega, N. G. Sanchez, `The CMB Quadrupole depression produced by early fast-roll inflation: MCMC analysis of WMAP and SDSS data', arXiv:0804.2387, Phys. Rev. D 78, 023013 (2008).
C. Destri, H. J. de Vega, N. G. Sanchez, Higher order terms in the inflaton potential and the lower bound on the tensor to scalar ratio r, arXiv:0906.4102.
C. Destri, H. J. de Vega, N. G. Sanchez, `Pre-inflationary and inflationary fast-roll eras and their signatures in the low CMB multipoles', arXiv:0912.2994, Phys. Rev. D 81, 063520 (2010).
REVIEW ARTICLE:

D. Boyanovsky, C. Destri, H. J. de Vega, N. G. Sanchez, `The Effective Theory of Inflation in the Standard Model of the Universe and the CMB+LSS data analysis', arXiv:0901.0549, International Journal of Modern Physics A 24, 3669-3864 (2009).

DARK MATTER

Selected papers:

H. J. de Vega, N. G. Sanchez, 'Model independent analysis of dark matter points to a particle mass at the keV scale', arXiv:0901.0922, Mon. Not. R. Astron. Soc. 404, 885 (2010).

D. Boyanovsky, H. J. de Vega, N. G. Sanchez, `Constraints on dark matter particles from theory, galaxy observations and N-body simulations', arXiv:0710.5180, Phys. Rev. D 77, 043518 (2008).
H. J. de Vega, N. G. Sanchez, `Constant surface density and density profile of dark matter galaxies', arXiv:0907.0006.
H. J. de Vega, P. Salucci, N. G. Sanchez, `Universal galaxy properties and the mass of the dark matter particle from theory and observations: the power of the linear approximation', arXiv:1004.1908.

Thermalization in Field Theory:

D. Boyanovsky, C. Destri, H. J. de Vega, `Approach to thermalization in the classical phi^4 theory in 1+1 dimensions: energy cascades and universal scaling', Phys. Rev. D 69, 045003 (2004), hep-ph/0306124.
C. Destri, H. J. de Vega, `Ultraviolet cascade in the thermalization of the classical phi^4 theory in 3+1 dimensions', Phys. Rev. D 73, 025014 (2006), hep-ph/0410280.

Early cosmology (inflationary) using out of equilibrium quantum field theory methods to describe the dynamics of matter.
Selected papers:

D. Boyanovsky, D. Cormier, H. J. de Vega, R. Holman and S. Prem Kumar. `Out of Equilibrium Fields in Inflationary Dynamics. Density Fluctuations'. Lectures given at the VIth. `D. Chalonge' School, `Current Topics in Astrofundamental Physics', Erice, Sicily, 4-15 september 1997. Published in the Proceedings N. Sánchez and A. Zichichi, editors, p. 119-194, hep-ph/9801453.

D. Boyanovsky, H. J. de Vega and R. Holman, `Non-equilibrium evolution of scalar fields in FRW cosmologies', Phys. Rev. D 49, 2769 (1994).

D. Boyanovsky, D. Cormier, H. J. de Vega and R. Holman, `Out of Equilibrium Dynamics of an Inflationary phase transition', Phys. Rev. D55, 3373 (1997).

D. Boyanovsky, D. Cormier, H. J. de Vega, R. Holman, A. Singh and M. Srednicki, `Scalar Field Dynamics in FRW Space-times', Phys. Rev. D56, 1939 (1997).

D. Boyanovsky, D. Cormier, H. J. de Vega, R. Holman and S. Prem Kumar, `Non-Perturbative Quantum Dynamics of a New Inflation Model', Phys. Rev. D57, 2166 (1998).

H. J. de Vega, A. L. Larsen and N. Sánchez, `Non-Singular String-Cosmologies From Exact Conformal Field Theories', hep-th/9906218 . Phys. Rev. D61, 066003 (2000).

D. Boyanovsky and H. J. de Vega, `Dynamics of Symmetry Breaking in FRW Cosmologies: Emergence of Scaling', hep-ph/9911521 . Phys. Rev. D61 , 105014 (2000).

HOT PHYSICS

Out of equilibrium evolution in QFT for high energies and high energy densities. Hard Thermal Loops in gauge theories. Resummation of infrared divergences at zero temperature and high temperatures using the dynamical renormalization group.
Selected papers:

D. Boyanovsky, H. J. de Vega, R. Holman, S. Prem Kumar and R. D. Pisarski, `Real-time relaxation and kinetics in hot scalar QED: Landau damping', Phys. Rev. D 58, 125009 (1998).

D. Boyanovsky, H. J. de Vega, R. Holman and M. Simionato, `Dynamical renormalization group resummation of finite temperature infrared divergences', Phys. Rev. D60, 065003 (1999).

S. M. Alamoudi, D. Boyanovsky, H. J. de Vega and R. Holman, `Quantum kinetics and thermalization in an exactly solvable model', Phys. Rev. D 59, 025003 (1998) and
`Quantum kinetics and thermalization in a particle bath model', Phys. Rev. E60, 94 (1999).

D. Boyanovsky, H. J. de Vega, Y. J. Ng, D.-S. Lee and S.-Y. Wang, `Fermion Damping in a Fermion-Scalar Plasma', Phys. Rev. D59, 105001 (1999).

S.-Y. Wang, D. Boyanovsky, H. J. de Vega, D.-S. Lee and Y. J. Ng, `Damping Rates and Mean Free Paths of Soft Fermion Collective Excitations in a Hot Fermion-Gauge-Scalar Theory', hep-ph/9902218. Phys. Rev. D61, 065004 (2000).

S. Prem Kumar, Daniel Boyanovsky, H. J. de Vega and Richard Holman, `Anomalous Pseudoscalar-Photon Vertex In and Out of Equilibrium', hep-ph/9905374. Phys. Rev. D61, 065002 (2000).

Out of Equilibrium Field Theory. Quantum Kinetic Theory

Out of equilibrium evolution in QFT. That means to solve the initial value problem in QFT (Cauchy problem). We study the time evolution of quantum states which are not eigenstates of the hamiltonian as well as the time evolution of density matrices which are non-thermal. We use large N and Hartree methods to deal with high (order 1/coupling) energy density.

Selected papers:

D. Boyanovsky, H. J. de Vega, R. Holman, D S Lee and A Singh, `Dissipation via particle production in scalar field theories', Phys. Rev. D51, 4419 (1995).

D. Boyanovsky, M. D'Attanasio, H. J. de Vega, R. Holman and D.-S. Lee, `Reheating and Thermalization: Linear vs. Non-linear Relaxation', Phys. Rev. D 52, 6805 (1995).

D. Boyanovsky, M. D'Attanasio, H. J. de Vega and R. Holman, `Evolution of inhomogeneous condensates after phase transitions', Phys. Rev. D54, 1748 (1996).

D. Boyanovsky, H. J. de Vega, R. Holman and J. F. J. Salgado, `Analytic and Numerical Study of Preheating Dynamics', Phys. Rev. D54, 7570 (1996).

D. Boyanovsky, C. Destri, H. J. de Vega, R. Holman and J. F. J. Salgado, `Asymptotic Dynamics in Scalar Field Theory: Anomalous Relaxation', Phys. Rev. D57, 7388 (1998).

D. Boyanovsky and H. J. de Vega, `Anomalous Kinetics of Hard Charged Particles: Dynamical Renormalization Group Resummation', Phys. Rev. D59, 105019 (1999).

D. Boyanovsky, H. J. de Vega and S.-Y. Wang, `Dynamical Renormalization Group Approach to Quantum Kinetics in Scalar and Gauge Theories', hep-ph/9909369. Phys. Rev. D61, 065006 (2000).

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