4 papers
White Dwarf Bounds on CHAMPs
Michael A. Fedderke, Peter W. Graham, Surjeet Rajendran
White dwarfs (WD) effectively act as high-gain amplifiers for relatively small energy deposits within their volume via their supernova instability. In this paper, we consider the w…
Axion Dark Matter Detection with CMB Polarization
Michael A. Fedderke, Peter W. Graham, Surjeet Rajendran
We point out two ways to search for low-mass axion dark matter using cosmic microwave background (CMB) polarization measurements. These appear, in particular, to be some of the mos…
Relaxation of the Composite Higgs Little Hierarchy
Brian Batell, Michael A. Fedderke, Lian-Tao Wang
We describe a composite Higgs scenario in which a cosmological relaxation mechanism naturally gives rise to a hierarchy between the weak scale and the scale of spontaneous global s…
The Higgs Portal and Cosmology
Ketevi Assamagan, Chien-Yi Chen, John Paul Chou +19
Higgs portal interactions provide a simple mechanism for addressing two open problems in cosmology: dark matter and the baryon asymmetry. In the latter instance, Higgs portal inter…