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Euclidean Quantum Field Theory on Commutative and Noncommutative Spaces
I give an introduction to Euclidean quantum field theory from the point of view of statistical physics, with emphasis both on Feynman graphs and on... -
Index Theorems and Noncommutative Topology
These lecture notes are mainly devoted to a K-theory proof of the Atiyah-Singer index theorem. Some applications of the K-theory to noncommutative... -
Astrophysical Bounds on Planck Suppressed Lorentz Violation
This article reviews many of the observational constraints on Lorentz symmetry violation (LV). We first describe the GZK cuto. and other phenomena... -
Inflationary Cosmological Perturbations of Quantum-Mechanical Origin
This review article aims at presenting the theory of inflation. We first describe the background spacetime behavior during the slow-roll phase and... -
Quantum Gravity
It is not clear at all what is the problem in quantum gravity (cf. [3] or [8] for general reviews, written in the same spirit as the present one).... -
Beyond the Standard Model
Some possible directions for physics beyond the Standard Model are reviewed, with particular emphasis on topics relevant to astrophysics and... -
Cosmic Microwave Background Fluctuations
Several experiments have recently detected very low contrast, sub-horizon scale structures in the Cosmic Microwave Background (CMB). In the current... -
Evidence for an Accelerating Universe from Type Ia Supernovae
The expansion history of the universe is revealed by measurements of cosmic distances. Since the various energy components in a Friedmann universe... -
Constraining Cosmological Parameters with Observations of Galaxy Clusters
Galaxy clusters are ideal probes of the large-scale structure of the Universe and for the tests of cosmological models. Based on the REFLEX redshift... -
The NASA - MIDEX Swift Mission
The Gamma Ray Bursts as powerful extragalactic sources are one of the major discovery which occurred in the last decade thanks to the BATSE satellite... -
Fundamental Physics with Space Experiments
I review a category of experiments in fundamental physics that need space as a laboratory. All these experiments have in common the need of a very... -
Connections Between Quantum Theory and Cosmology: An Unconventional View
Usually cosmology is seen as a special part of general relativity. Quantum theory is normally understood as responsible for the small and the very... -
A New Unifying Field Spacetime Structure
Analysis of the data and equations for the solar system and the hydrogen atom identified a unifying spacetime structure intrinsic to the fields. The... -
High Energy Photon Flux Prediction from Neutralino Annihilation in M 31
Considering a NFW halo of M 31 made of neutralinos, predictions for the... -
Cosmic Shear from STIS Pure Parallels - II. Analysis
The tidal gravitational field due to the inhomogeneous distribution of matter in the Universe causes the distortion of light bundles from distant... -
APPLES: A Parallel Slitless Imaging Survey for ACS
We present APPLES, the ACS Pure Parallel Ly $\alpha$ Emission... -
Big Bang Nucleosynthesis of Lithium-7 and the Baryon Density of the Universe
Thanks to recent nuclear physic compilations, we update Standard Big Bang Nucleosynthesis (SBBN) calculations. By a Monte-Carlo technique, we... -
Problems of Cosmological Darwinian Selection and the Origin of Habitable Universes
For the cosmologist and physicist Lee Smolin, our universe is only one in a much larger cosmos (the Multiverse), a member of a growing community of... -
Astroparticle Physics with the L3+C Detector
The L3+C detector, which was located at the CERN electron-positron collider, LEP, has been used to collect a total of... -
Alpha: A Constant That Is Not a Constant?
We review the observational information on the constancy of the fine structure constant...