95 citations · 143 across the 10 of their papers we have counts for
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hep-ph2023
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…
hep-ph2023
A new source for light dark matter isocurvature in low scale inflation
Andrea Caputo, Michael Geller, Giuseppe Rossi
Light scalar and pseudoscalar particles are compelling dark matter candidates, with a vast running experimental program to discover them. Previous studies have shown that these lig…