HOME PAGE OF H. J. DE VEGA
CURRICULUM VITAE. LIST OF
PUBLICATIONS
Notice des Titres et Travaux
(in french)
Résumé
(in french)
ESOF 2010, European
Science Open Forum, Turin, Italy. Towards the Origin of the Universe
(general interest conference).
Recent Specialized Lecture on Cosmology:
`The effective theory of inflation confronted to the WMAP and LSS observations
in the Standard Model of the Universe. Dark Matter particles are in the keV scale'
Recent Lectures on Cosmology:
`The Standard Model of the Universe: the Effective Theory of Inflation
Confronted to Observations, Dark Matter and Today's Dark Energy'
Present Scientific Interests:
The Chalonge School
Past Scientific Interests:
Particle Physics at high densities and high energies. HOT PHYSICS
Out of Equilibrium Field Theory. Quantum Kinetic Theory
Integrable Theories
String Theory. Strings in Curved Spacetimes
Fractal Structures in the Universe. The Self Gravitating Gas
Instantons, soliton and vortices in Quantum Field Theory
Renormalization Group and Renormalization Theory.
COSMOLOGY
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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