Decoupling Dark Energy from Matter (2009)
Brax, Philippe, Van De Bruck, Carsten, Martin, Jerome, Davis, Anne-Christine
We examine the embedding of dark energy in high energy models based upon supergravity and extend the usual phenomenological setting comprising an observable sector and a hidden supersymmetry breaking...
Lemoine, Martin, Martin, Jerome, Yokoyama, Jun'ichi
We set constraints on moduli cosmology from the production of dark matter -- radiation and baryon -- radiation isocurvature fluctuations through modulus decay, assuming the modulus remains light...
The moduli problem at the perturbative level (2009)
Lemoine, Martin, Martin, Jerome, Yokoyama, Jun'ichi
Moduli fields generically produce strong dark matter -- radiation and baryon -- radiation isocurvature perturbations through their decay if they remain light during inflation. We show that existing...
Dirac Born Infeld (DBI) Cosmic Strings (2008)
Babichev, Eugeny, Brax, Philippe, Caprini, Chiara, Martin, Jerome, Steer, Daniele
Motivated by brane physics, we consider the non-linear Dirac-Born-Infeld (DBI) extension of the Abelian-Higgs model and study the corresponding cosmic string configurations. The model is defined by a...
Dirac Born Infeld (DBI) Cosmic Strings (2008)
Babichev, Eugeny, Brax, Philippe, Caprini, Chiara, Martin, Jerome, Steer, Daniele
Motivated by brane physics, we consider the non-linear Dirac-Born-Infeld (DBI) extension of the Abelian-Higgs model and study the corresponding cosmic string configurations. The model is defined by a...
K-inflationary Power Spectra in the Uniform Approximation (2008)
Lorenz, Larissa, Martin, Jerome, Ringeval, Christophe
The advent of explicit Dirac-Born-Infeld (DBI) inflationary models within string theory has drawn renewed interest to the cosmological role of unusual scalar field dynamics, usually referred to as...
Constraints on Kinetically Modified Inflation from WMAP5 (2008)
Lorenz, Larissa, Martin, Jerome, Ringeval, Christophe
Single field inflationary models with a non-minimal kinetic term (also called k-inflationary models) can be characterised by the so-called sound flow functions, which complete the usual Hubble flow...
Curvaton Decay into Baryons, anti-Baryons and Radiation (2008)
Lemoine, Martin, Martin, Jerome, Petit, Gregory
This paper calculates the amount of baryon/radiation isocurvature fluctuation produced through the decay of a curvaton field. It is shown in particular that if curvaton decay preserves baryon number...
Appeared in Conference on Intelligent Autonomous Systems, IAS '95, Karlsruhe, March 95. (2008)
Best Paper Prize, Jerome Martin, James L Crowley
This paper presents a theoretical and experimental comparison of different forms of SSD and normalised cross-correlation of image neighborhoods. Signal detection theory is used as a framework for...
Martin, Jerome, Yamaguchi, Masahide
Models where the dark energy is a scalar field with a non-standard Dirac-Born-Infeld (DBI) kinetic term are investigated. Scaling solutions are studied and proven to be attractors. The corresponding...
Brane inflation and the WMAP data: a Bayesian analysis (2007)
Lorenz, Larissa, Martin, Jerome, Ringeval, Christophe
The Wilkinson Microwave Anisotropy Probe (WMAP) constraints on string inspired ''brane inflation'' are investigated. Here, the inflaton field is interpreted as the distance between two branes placed...
Inflationary Perturbations: the Cosmological Schwinger Effect (2007)
This pedagogical review aims at presenting the fundamental aspects of the theory of inflationary cosmological perturbations of quantum-mechanical origin. The analogy with the well-known Schwinger...
Moduli Fields as Quintessence and the Chameleon (2006)
Brax, Philippe, Martin, Jerome
We consider models where moduli fields are not stabilized and play the role of quintessence. In order to evade gravitational tests, we investigate the possibility that moduli behave as chameleon...
Neutralino Dark Matter and the Curvaton (2006)
Lemoine, Martin, Martin, Jerome
We build a realistic model of curvaton cosmology, in which the energy content is described by radiation, WIMP dark matter and a curvaton component. We calculate the curvature and isocurvature...
The SUGRA Quintessence Model Coupled to the MSSM (2006)
Brax, Philippe, Martin, Jerome
We study the cosmological evolution of the universe when quintessence is modeled within supergravity, supersymmetry is broken in a hidden sector, and we also include observable matter in a third...
Dark Energy and the MSSM (2006)
Brax, Philippe, Martin, Jerome
We consider the coupling of quintessence to observable matter in supergravity and study the dynamics of both supersymmetry breaking and quintessence in this context. We investigate how the...
On the Reliability of the Langevin Pertubative Solution in Stochastic Inflation (2005)
Martin, Jerome, Musso, Marcello
A method to estimate the reliability of a perturbative expansion of the stochastic inflationary Langevin equation is presented and discussed. The method is applied to various inflationary scenarios,...
Coupling Quintessence to Inflation in Supergravity (2005)
Brax, Philippe, Martin, Jerome
The evolution of the quintessence field during a phase of chaotic inflation is studied. The inflaton and the quintesssence field are described in a supergravity framework where the coupling between...
Stochastic Quintessence (2004)
Martin, Jerome, Musso, Marcello A.
The behavior of the quintessence field is studied during inflation. In order to have a satisfactory model of dark energy, the quintessence field value today should be as insensible to the initial...
Superimposed Oscillations in the WMAP Data? (2003)
Martin, Jerome, Ringeval, Christophe
The possibility that the cosmic variance outliers present in the recently released WMAP multipole moments are due to oscillations in the primordial power spectrum is investigated. Since the most...
Inflation and non--Gaussianity (2002)
Gangui, Alejandro, Martin, Jerome, Sakellariadou, Mairi
We study non-Gaussian signatures on the cosmic microwave background (CMB) radiation predicted within inflationary models with non-vacuum initial states for cosmological perturbations. The model...
Green Functions for Topology Change (2000)
Martin, Jerome, Pinto-Neto, Nelson, Soares, Ivano Damiao
We explicitly calculate the Green functions describing quantum changes of topology in Friedman-Lemaitre-Robertson-Walker Universes whose spacelike sections are compact but endowed with distinct...
The Trans-Planckian Problem of Inflationary Cosmology (2000)
Martin, Jerome, Brandenberger, Robert H.
In most current models of inflation based on a weakly self-coupled scalar matter field minimally coupled to gravity, the period of inflation lasts so long that, at the beginning of the inflationary...
Gangui, Alejandro, Martin, Jerome
Measuring the three-point correlators of the Cosmic Microwave Background (CMB) anisotropies could help to get a handle on the level of non-Gaussianity present in the observational datasets and...
SmartOffice: An Intelligent and Interactive Environment (1999)
Montbonnot Saint Martin, Jerome Martin, Christophe Le Gal, Christophe Le Gal, Guillaume Durand, Guillaume Dur
This paper presents our Intelligent Environment called SmartOffice. In the SmartOffice the user can work as in a normal office. The office's intelligence observes the user in order to anticipate...
MagicBoard: A Contribution to an Intelligent Office Environment (1999)
Daniela Hall, D. Hall, Jerome Martin, Christophe Le Gal, J. Martin, O. Chomat, ...
. In this paper we describe an augmented reality tool for collaborative work called the MagicBoard. The MagicBoard is based on a ordinary white board which has been enhanced by a video projector and...
Visual Processes for Tracking and Recognition of Hand Gestures (1997)
James L. Crowley, Jerome Martin
This paper describes experiments with techniques for tracking hands and recognizing gestures. Complementary techniques are presented for detecting and tracking hands and tools. These techniques are...