We consider the production of matter and radiation during reheating after inflation, restricting
our attention solely to gravitational interactions. Processes considered are the exchange of a …

We consider the direct s-channel gravitational production of dark matter during the reheating
process. Independent of the identity of the dark matter candidate or its nongravitational …

A bstract The relic density of Dark Matter (DM) in the freeze-in scenario is highly dependent
on the evolution history of the universe and changes significantly in a non-standard (NS) …

We compute the density of a spin-3 2 particle, the raritron, produced at the end of inflation
due to gravitational interactions. We consider a background inflaton condensate as the …

We study the impact of thermalization and number-changing processes in the dark sector on
the yield of gravitationally produced dark matter (DM). We take into account the DM …

A bstract We investigate the reach of future gravitational wave (GW) detectors in probing
inflaton couplings with visible sector particles that can either be bosonic or fermionic in …

A bstract The Standard Model Effective Field Theory (SMEFT) and the Low Energy Effective
Field Theory (LEFT) can be extended by adding additional spin 0, 1/2 and 1 dark matter …

Standard Model (SM) of particle physics has achieved enormous success in describing the
interactions among the known fundamental constituents of nature, yet it fails to describe …

A bstract Displaced vertices at colliders, arising from the production and decay of long-lived
particles, probe dark matter candidates produced via freeze-in. If one assumes a standard …

Detecting dark matter (DM) relic via freeze-in is difficult in laboratories due to smallness of
the couplings involved. However, a non-standard cosmological history of the Universe, prior …