Reheating embedded in quantum gravity

Embed the reheating phase of modified gravity inflation into a fully quantized theory of spacetime by deriving gravitational reheating dynamics in loop quantum cosmology, string field theory, or under asymptotic safety, and quantify their observational consequences.

Background

While phenomenological reheating models exist, the review stresses the absence of a derivation anchored in a complete quantum gravity framework. Such an embedding would clarify energy transfer mechanisms and resolve ambiguities about initial conditions and particle production.

A quantum-gravity-based description could also produce distinct signatures (e.g., GW backgrounds) that test the microphysics of early-universe reheating.