327 citations · 2.4k across the 22 of their papers we have counts for
22 papers
Chameleons in the Early Universe: Kicks, Rebounds, and Particle Production
Adrienne L. Erickcek, Neil Barnaby, Clare Burrage +1
Chameleon gravity is a scalar-tensor theory that includes a non-minimal coupling between the scalar field and the matter fields and yet mimics general relativity in the Solar Syste…
Catastrophic Consequences of Kicking the Chameleon
Adrienne L. Erickcek, Neil Barnaby, Clare Burrage +1
The physics of the "dark energy" that drives the current cosmological acceleration remains mysterious, and the dark sector may involve new light dynamical fields. If these light sc…
Signatures of anisotropic sources in the squeezed-limit bispectrum of the cosmic microwave background
Maresuke Shiraishi, Eiichiro Komatsu, Marco Peloso +1
The bispectrum of primordial curvature perturbations in the squeezed configuration, in which one wavenumber, , is much smaller than the other two, , pla…
Gravity waves and non-Gaussian features from particle production in a sector gravitationally coupled to the inflaton
Neil Barnaby, Jordan Moxon, Ryo Namba +3
We study the possibility that particle production during inflation could source observable gravity waves on scales relevant for Cosmic Microwave Background experiments. A crucial c…
Observable non-gaussianity from gauge field production in slow roll inflation, and a challenging connection with magnetogenesis
Neil Barnaby, Ryo Namba, Marco Peloso
In any realistic particle physics model of inflation, the inflaton can be expected to couple to other fields. We consider a model with a dilaton-like coupling between a U(1) gauge…
Gauge Field Production in Axion Inflation: Consequences for Monodromy, non-Gaussianity in the CMB, and Gravitational Waves at Interferometers
Neil Barnaby, Enrico Pajer, Marco Peloso
Models of inflation based on axions, which owe their popularity to the robustness against UV corrections, have also a very distinct class of signatures. The relevant interactions o…