Speaker
Anish Ghoshal
(University of Sussex)
Description
We propose a novel cosmological probe of dark matter (DM) and QCD Axions through inflationary primordial gravitational wave (GW) measurements highlighting its complementarity with traditional indirect detection. In scenarios like early matter domination (EMD), the thermal DM relic is diluted and then replenished via non-thermal production, leaving characteristic imprints on the primordial GW spectrum, inducing frequency-dependent suppressions in the GW amplitudes.
Author
Anish Ghoshal
(University of Sussex)