11 papers
Pulsar Timing Sensitivity to Dark Matter Substructure in the Presence of a Stochastic Gravitational-Wave Background
Abhiram Cherukupalli, Vincent S. H. Lee, Kim Berghaus +1
Pulsar timing arrays (PTAs) can detect dark matter (DM) substructure through the small shifts a transiting DM subhalo imprints on pulse arrival times. Recently found evidence for a…
Physics beyond the Standard Model with the DSA-2000
Kim V. Berghaus, Yufeng Du, Vincent S. H. Lee +4
The upcoming Deep Synoptic Array 2000 (DSA-2000) will map the radio sky at GHz (eV) with unprecedented sensitivity. This will enable searches for dark matt…
Detecting gravitational signatures of dark matter with atom gradiometers
Leonardo Badurina, Yufeng Du, Vincent S. H. Lee +2
We study the purely gravitational signatures of dark matter from the ultralight to the ultraheavy mass range in proposed long-baseline atom gradiometers, focusing on terrestrial de…
Quantum Area Fluctuations from Gravitational Phase Space
Luca Ciambelli, Temple He, Kathryn M. Zurek
We study the gravitational phase space associated to a stretched horizon within a finite-sized causal diamond in -dimensional spacetimes. By imposing the Raychaudhuri equati…
Proper Time Observables of General Gravitational Perturbations in Laser Interferometry-based Gravitational Wave Detectors
Vincent S. H. Lee, Kathryn M. Zurek
We present an explicitly gauge-invariant observable of {\em any} general gravitational perturbation, (\textit{not} necessarily due to gravitational waves (GWs)), in a la…
An On-Shell Derivation of the Soft Effective Action in Abelian Gauge Theories
Temple He, Prahar Mitra, Allic Sivaramakrishnan +1
We derive the soft effective action in -dimensional abelian gauge theories from the on-shell action obeying Neumann boundary conditions at timelike and null infinity and Dir…