918 citations · 10.5k across the 126 of their papers we have counts for
32 papers · 1 filter
Minimal decoherence from inflation
C. P. Burgess, R. Holman, Greg Kaplanek +2
We compute the rate with which super-Hubble cosmological fluctuations are decohered during inflation, by their gravitational interactions with unobserved shorter-wavelength scalar…
Real-space entanglement of quantum fields
Jerome Martin, Vincent Vennin
We introduce a new method permitting the analytical determination of entanglement entropy (and related quantities) between configurations of a quantum field, which is either free o…
Superimposed Oscillations in Brane Inflation
Santiago Avila, Jerome Martin, Daniele Steer
In canonical scalar field inflation, the Starobinsky model (with a linear potential but discontinuous slope) is remarkable in that though slow-roll is violated, both the power-spec…
The Quantum State of Inflationary Perturbations
Jerome Martin
This article reviews the properties of the quantum state of inflationary perturbations. After a brief description of the inflationary background, the wavefunction of the Mukhanov-S…
Cosmological Inflation and the Quantum Measurement Problem
Jerome Martin, Vincent Vennin, Patrick Peter
According to cosmological inflation, the inhomogeneities in our universe are of quantum mechanical origin. This scenario is phenomenologically very appealing as it solves the puzzl…
Geometrically Consistent Approach to Stochastic DBI Inflation
Larissa Lorenz, Jerome Martin, Jun'ichi Yokoyama
Stochastic effects during inflation can be addressed by averaging the quantum inflaton field over Hubble-patch sized domains. The averaged field then obeys a Langevin-type equation…
Nonabelian Bosonic Currents in Cosmic Strings
Marc Lilley, Fabrizio Di Marco, Jerome Martin +1
A nonabelian generalization of the neutral Witten current-carrying string model is discussed in which the bosonic current-carrier belongs to a two dimensional representation of SU(…
Decoupling Dark Energy from Matter
Philippe Brax, Carsten van de Bruck, Jerome Martin +1
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 sup…
Dirac Born Infeld (DBI) Cosmic Strings
Eugeny Babichev, Philippe Brax, Chiara Caprini +2
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 mo…
DBI-essence
Jerome Martin, Masahide Yamaguchi
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.…
Brane inflation and the WMAP data: a Bayesian analysis
Larissa Lorenz, Jerome Martin, Christophe Ringeval
The Wilkinson Microwave Anisotropy Probe (WMAP) constraints on string inspired ''brane inflation'' are investigated. Here, the inflaton field is interpreted as the distance between…
Inflationary Perturbations: the Cosmological Schwinger Effect
Jerome Martin
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-…
Moduli Fields as Quintessence and the Chameleon
Philippe Brax, Jerome Martin
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 behav…
On the Reliability of the Langevin Pertubative Solution in Stochastic Inflation
Jerome Martin, Marcello Musso
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 infla…
Solving Stochastic Inflation for Arbitrary Potentials
Jerome Martin, Marcello Musso
A perturbative method for solving the Langevin equation of inflationary cosmology in presence of backreaction is presented. In the Gaussian approximation, the method permits an exp…
Shift Symmetry and Inflation in Supergravity
Philippe Brax, Jerome Martin
We consider models of inflation in supergravity with a shift symmetry. We focus on models with one moduli and one inflaton field. The presence of this symmetry guarantees the exist…
Birefringent Gravitational Waves and the Consistency Check of Inflation
Stephon Alexander, Jerome Martin
In this work we show that the gravitational Chern-Simons term, aside from being a key ingredient in inflationary baryogenesis, modifies super-horizon gravitational waves produced d…
Back-Reaction and the Trans-Planckian Problem of Inflation Revisited
Robert H. Brandenberger, Jerome Martin
It has recently been suggested that Planck scale physics may effect the evolution of cosmological fluctuations in the early stages of cosmological inflation in a non-trivial way, l…
Inflationary Cosmological Perturbations of Quantum-Mechanical Origin
Jerome Martin
This review article aims at presenting the theory of inflation. We first describe the background spacetime behavior during the slow-roll phase and analyze how inflation ends and th…
On the properties of the transition matrix in bouncing cosmologies
Jerome Martin, Patrick Peter
We elaborate further on the evolution properties of cosmological fluctuations through a bounce. We show this evolution to be describable either by ``transmission'' and ``reflection…
Propagating Cosmological Perturbations in a Bouncing Universe
Patrick Peter, Jerome Martin
Using the simplest model for a bouncing universe, namely that for which gravity is described by pure general relativity, the spatial sections are positively curved and the matter c…
Parametric amplification of metric fluctuations through a bouncing phase
Jerome Martin, Patrick Peter
We clarify the properties of the behavior of classical cosmological perturbations when the Universe experiences a bounce. This is done in the simplest possible case for which gravi…
On the Dependence of the Spectra of Fluctuations in Inflationary Cosmology on Trans-Planckian Physics
Jerome Martin, R. H. Brandenberger
We calculate the power spectrum of metric fluctuations in inflationary cosmology starting with initial conditions which are imposed mode by mode when the wavelength equals some cri…
Trans-Planckian Dark Energy?
Martin Lemoine, Jerome Martin, Jean-Philippe Uzan
It has recently been proposed by Mersini et al. 01, Bastero-Gil and Mersini 02 that the dark energy could be attributed to the cosmological properties of a scalar field with a non-…