output
20132022
most citedCosmology and Fundamental Physics with the Euclid Satellite

1k citations

researchers with a paper here

Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.

collaborating institutions
Showing 2016 · hep-thShow all

12 papers · 2 filters

hep-th2016★ 16 cited

Note on Reheating in G-inflation

Hossein Bazrafshan Moghaddam, Robert Brandenberger, Jun'ichi Yokoyama

We study particle production at the end of inflation in kinetically driven G-inflation model and show that, in spite of the fact that there are no inflaton oscillations and hence n…

hep-th2016★ 1 cited

Doubly coupled matter fields in massive bigravity

Xian Gao, Lavinia Heisenberg

In the context of massive (bi-)gravity non-minimal matter couplings have been proposed. These couplings are special in the sense that they are free of the Boulware-Deser ghost belo…

hep-th2016★ 20 cited

Particle Production in Ekpyrotic Scenarios

W. S. Hipolito-Ricaldi, Robert Brandenberger, Elisa G. M. Ferreira +1

We consider Parker particle production in the Ekpyrotic scenario (in particular in the New Ekpyrotic model) and show that the density of particles produced by the end of the phase…

hep-th2016★ 138 cited

Beyond generalized Proca theories

Lavinia Heisenberg, Ryotaro Kase, Shinji Tsujikawa

We consider higher-order derivative interactions beyond second-order generalized Proca theories that propagate only the three desired polarizations of a massive vector field beside…

hep-th2016★ 8 cited

New Quasidilaton theory in Partially Constrained Vielbein Formalism

Antonio De Felice, A. Emir Gümrükçüoğlu, Lavinia Heisenberg +2

In this work we study the partially constrained vielbein formulation of the new quasidilaton theory of massive gravity which couples to both physical and fiducial metrics simultane…

hep-th2016★ 385 cited

Bouncing Cosmologies: Progress and Problems

Robert Brandenberger, Patrick Peter

We review the status of bouncing cosmologies as alternatives to cosmological inflation for providing a description of the very early universe, and a source for the cosmological per…

hep-th2016★ 10 cited

Holographic Curvature Perturbations in a Cosmology with a Space-Like Singularity

Elisa G. M. Ferreira, Robert Brandenberger

We study the evolution of cosmological perturbations in an anti-de-Sitter (AdS) bulk through a cosmological singularity by mapping the dynamics onto the boundary conformal fields t…

hep-th2016★ 58 cited

Cosmology for quadratic gravity in generalized Weyl geometry

Jose Beltran Jimenez, Lavinia Heisenberg, Tomi S. Koivisto

A class of vector-tensor theories arises naturally in the framework of quadratic gravity in spacetimes with linear vector distortion. Requiring the absence of ghosts for the vector…

hep-th2016★ 221 cited

Derivative self-interactions for a massive vector field

Jose Beltrán Jiménez, Lavinia Heisenberg

In this work we revisit the construction of theories for a massive vector field with derivative self-interactions such that only the 3 desired polarizations corresponding to a Proc…

hep-th2016★ 104 cited

Initial Conditions for Inflation - A Short Review

Robert Brandenberger

I give a brief review of the status of research on the nature of initial conditions required to obtain a period of cosmological inflation. It is shown that there is good evidence t…

hep-th2016★ 32 cited

Preheating and Entropy Perturbations in Axion Monodromy Inflation

Evan McDonough, Hossein Bazrafshan Moghaddam, Robert H. Brandenberger

We study the preheating of gauge fields in a simple axion monodromy model and compute the induced entropy perturbations and their effect on the curvature fluctuations. We find that…

hep-th2016★ 7 cited

Derivative couplings in massive bigravity

Xian Gao, Lavinia Heisenberg

In this work we study the cosmological perturbations in massive bigravity in the presence of non-minimal derivative couplings. For this purpose we consider a specific subclass of H…