Speaker
Dr
Yong Xu
(JGU Mainz)
Description
In this talk, I will discuss the inevitable stochastic gravitational wave (GW) spectrum resulting from graviton bremsstrahlung during inflationary reheating. We will focus on an inflaton, denoted as $\phi$, oscillating around a generic monomial potential $V(\phi) \propto \phi^n$, while considering two different reheating scenarios: (i) inflaton decay and (ii) inflaton annihilation. I will demonstrate the intriguing dependence of GW on the shape of the inflaton potential as well as the type of inflaton-matter coupling. Finally, I will highlight the novel potential of future high-frequency GW detectors in probing the dynamics of reheating.
Author
Dr
Yong Xu
(JGU Mainz)
Co-authors
Nicolás Bernal
(New York U., Abu Dhabi)
Simon Cléry
(IJCLab, Orsay)
Yann Mambrini
(Orsay, LPT)
