449 citations · 2.9k across the 64 of their papers we have counts for
47 papers · 1 filter
Challenges in Interpreting the NANOGrav 15-Year Data Set as Early Universe Gravitational Waves Produced by ALP Induced Instability
Michael Geller, Subhajit Ghosh, Sida Lu +1
In this paper, we study a possible early universe source for the recent observation of a stochastic gravitational wave background at the NANOGrav pulsar timing array. The source is…
Probing Cosmological Particle Production and Pairwise Hotspots with Deep Neural Networks
Taegyun Kim, Jeong Han Kim, Soubhik Kumar +3
Particles with masses much larger than the inflationary Hubble scale, , can be pair-produced non-adiabatically during inflation. Due to their large masses, the produced partic…
Detecting Axion-Like Particles with Primordial Black Holes
Kaustubh Agashe, Jae Hyeok Chang, Steven J. Clark +3
Future gamma-ray experiments, such as the e-ASTROGAM and AMEGO telescopes, can detect the Hawking radiation of photons from primordial black holes (PBHs) if they make up a fraction…
Precision Cosmological Constraints on Atomic Dark Matter
Saurabh Bansal, Jared Barron, David Curtin +1
Atomic dark matter is a simple but highly theoretically motivated possibility for an interacting dark sector that could constitute some or all of dark matter. We perform a comprehe…
Early-Universe Model Building
Pouya Asadi, Saurabh Bansal, Asher Berlin +37
Theoretical investigations into the evolution of the early universe are an essential part of particle physics that allow us to identify viable extensions to the Standard Model as w…
Improved cosmological constraints on the neutrino mass and lifetime
Guillermo F. Abellán, Zackaria Chacko, Abhish Dev +3
We present cosmological constraints on the sum of neutrino masses as a function of the neutrino lifetime, in a framework in which neutrinos decay into dark radiation after becoming…