767 citations · 17k across the 373 of their papers we have counts for
14 papers · 1 filter
A Cosmological Window on Trans-Planckian Physics
Jerome Martin, Robert H. Brandenberger
In the framework of inflation, scales which nowadays correspond to large scale structures were smaller than the Planck length at the beginning of inflation. Therefore, measurements…
Super-Hubble Nonlinear Perturbations During Inflation
Niayesh Afshordi, Robert Brandenberger
We show that the non-linear evolution of long wavelength perturbations may be important in a wide class of inflationary scenarios. We develop a solution for the evolution of such n…
Galaxy-QSO Correlation induced by Weak Gravitational Lensing arising from Large-Scale Structure
Antonio C. C. Guimaraes, Carsten van de Bruck, Robert H. Brandenberger
Observational evidence shows that gravitational lensing induces an angular correlation between the distribution of galaxies and much more distant QSOs. We use weak gravitational le…
Non-Thermal Production of WIMPs and the Sub-Galactic Structure of the Universe
W. B. Lin, D. H. Huang, X. Zhang +1
There is increasing evidence that conventional cold dark matter (CDM) models lead to conflicts between observations and numerical simulations of dark matter halos on sub-galactic s…
Attractive Forces Between Global Monopoles and Domain Walls
Stephon Alexander, Robert Brandenberger, Richard Easther
We study the interaction between stable monopoles and domain walls in a scalar field theory. Numerical simulations reveal that there is an attractive force betw…
Backreaction and the Parametric Resonance of Cosmological Fluctuations
J. P. Zibin, R. Brandenberger, Douglas Scott
We study the class of two-field inflationary Universe models λϕ^4/4 + g^2χ^2ϕ^2/2, in which parametric resonance during the initial stages of reheating can lead to an exponential a…
Topology of the Las Campanas Redshift Survey
Hy Trac, Dimitris Mitsouras, Paul Hickson +1
The topology of the Las Campanas Redshift Survey is analyzed using Minkowski functional statistics, taking into account the selection effects of the survey. The results are compare…
Brane Gases in the Early Universe
S. Alexander, R. Brandenberger, D. Easson
Over the past decade it has become clear that fundamental strings are not the only fundamental degrees of freedom in string theory. D-branes are also part of the spectrum of fundam…
The Trans-Planckian Problem of Inflationary Cosmology
Jerome Martin, Robert H. Brandenberger
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…
Cosmological Perturbations in Brane-World Theories: Formalism
C. van de Bruck, M. Dorca, R. H. Brandenberger +1
We develop a gauge-invariant formalism to describe metric perturbations in five-dimensional brane-world theories. In particular, this formalism applies to models originating from h…
The Robustness of Inflation to Changes in Super-Planck-Scale Physics
Robert H. Brandenberger, Jerome Martin
We calculate the spectrum of density fluctuations in models of inflation based on a weakly self-coupled scalar matter field minimally coupled to gravity, and specifically investiga…
Back Reaction of Cosmological Perturbations
Robert H. Brandenberger
The presence of cosmological perturbations affects the background metric and matter configuration in which the perturbations propagate. This effect, studied a long time ago for gra…
Parametric Amplification of Metric Fluctuations During Reheating in Two Field Models
F. Finelli, R. Brandenberger
We study the parametric amplification of super-Hubble-scale scalar metric fluctuations at the end of inflation in some specific two-field models of inflation, a class of which is m…
Cosmic defects and cosmology
Joao Magueijo, Robert Brandenberger
We provide a pedagogical overview of defect models of structure formation. We first introduce the concept of topological defect, and describe how to classify them. We then show how…