Speaker
Roxane Theriault
(Jagiellonian University)
Description
Scalar particles traveling faster than a subluminal gravitational wave generate gravitons via gravitational Cherenkov radiation. We investigated graviton production by the primordial plasma within the framework of modified gravity in the early Universe, generating a relic graviton background. By requiring the relic graviton background to remain consistent with the Big Bang Nucleosynthesis constraint, we derived limits on the gravitational wave speed at early times in certain modified gravity theories.
Primary authors
Dr
Alexander Ganz
(Leibniz University Hannover)
Dr
Chunshan Lin
(Jagiellonian University)
Dr
Paola Delgado
(CEICO, FZU)
Roxane Theriault
(Jagiellonian University)
