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Laboratory Tests of Chameleon Models
Philippe Brax, Carsten van de Bruck, Anne-Christine Davis +1
We present a cursory overview of chameleon models of dark energy and their laboratory tests with an emphasis on optical and Casimir experiments. Optical experiments measuring the e…
Enhanced (p)reheating in DBI Inflation
A. C. Davis, Raquel H. Ribeiro
We study preheating in DBI hybrid inflation. Preheating occurs since the matter fields are non-minimally coupled to the inflaton. Despite the coupling being small, preheating happe…
The Effect of a Chameleon Scalar Field on the Cosmic Microwave Background
Anne-Christine Davis, Camilla A. O. Schelpe, Douglas J. Shaw
We show that a direct coupling between a chameleon-like scalar field and photons can give rise to a modified Sunyaev-Zel'dovich (SZ) effect in the Cosmic Microwave Background (CMB)…
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…
Active Galactic Nuclei Shed Light on Axion-like-Particles
Clare Burrage, Anne-Christine Davis, Douglas J. Shaw
We demonstrate that the scatter in the luminosity relations of astrophysical objects can be used to search for axion-like-particles (ALPs). This analysis is applied to observations…