52 citations · 94 across the 3 of their papers we have counts for
8 papers · 1 filter
Periodic Cosmic String Formation and Dynamics
Michael A. Fedderke, Junwu Huang, Nils Siemonsen
We study string formation and dynamics in a scalar field theory with a global symmetry. If a scalar field is initially displaced from the minimum of a wine-bottle potent…
Fireball anti-nucleosynthesis
Michael A. Fedderke, David E. Kaplan, Anubhav Mathur +2
The tentative identification of approximately ten relativistic anti-helium cosmic-ray events at AMS-02 would, if confirmed, challenge our understanding of the astrophysical synthes…
A Hunt for Magnetic Signatures of Hidden-Photon and Axion Dark Matter in the Wilderness
Ibrahim A. Sulai, Saarik Kalia, Ariel Arza +17
Earth can act as a transducer to convert ultralight bosonic dark matter (axions and hidden photons) into an oscillating magnetic field with a characteristic pattern across its surf…
Measuring axion gradients with photon interferometry (MAGPI)
Michael A. Fedderke, Jedidiah O. Thompson, Raphael Cervantes +5
We propose a novel search technique for axions with a -violating monopole coupling to bulk Standard Model charges . Gradients in the static axi…
Earth as a transducer for dark-photon dark-matter detection
Michael A. Fedderke, Peter W. Graham, Derek F. Jackson Kimball +1
We propose the use of the Earth as a transducer for ultralight dark-matter detection. In particular we point out a novel signal of kinetically mixed dark-photon dark matter: a mono…
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…