8 papers · 1 filter
Echoes of Global Cosmic Strings
Jeff A. Dror, Antonios Kyriazis
If the Universe underwent a cosmic phase transition, it may have left behind a network of cosmic strings. When these strings arise from the breaking of a gauge symmetry, their deca…
Cosmic Axion Background Detection Using Resonant Cavity Arrays
Soobeom Chung, Jeff A. Dror
The axion is a well-motivated and generic extension of the Standard Model. If produced in the early universe, axions may still be relativistic today, forming a Cosmic Axion Backgro…
Exploring Invisible New Physics with Exotic Pion Decays
Wolfgang Altmannshofer, Jeff A. Dror, Pierce Giffin +5
We study the sensitivity of past and future stopped-pion experiments to light, invisible dark sector particles produced in exotic pion decays. We consider two-body decays involving…
Ultralight Dark Matter Statistics for Pulsar Timing Detection
Kimberly K. Boddy, Jeff A. Dror, Austin Lam
Fluctuations in ultralight dark matter produce significant metric perturbations, which may be detected by monitoring the arrival times of light from millisecond pulsars. While sear…
On Pulsar Timing Detection of Ultralight Vector Dark Matter
Jeff A. Dror, Qiushi Wei
Ultralight vector dark matter induces metric fluctuations that generate timing residuals in the arrival times of pulsar emissions through two distinct modes: a fast mode, sourced b…
Axion Production and Detection Using a Dual NMR-type Experiment
Jeff A. Dror, Qiushi Wei, Fengwei Yang
Axions that couple to nuclear spins via the axial current interaction can be both produced and detected using nuclear magnetic resonance (NMR) techniques. In this scheme, nuclei dr…