1. Detectable gravitational wave signals from inflationary preheating.
- Author
-
Cui, Yanou and Sfakianakis, Evangelos I.
- Subjects
- *
INFLATIONARY universe , *GRAVITATIONAL waves , *DARK matter , *BLACK holes , *PARTICLE physics , *LINEAR statistical models , *MERGERS & acquisitions - Abstract
We consider gravitational wave (GW) production during preheating in hybrid inflation models where an axion-like waterfall field couples to Abelian gauge fields. Based on a linear analysis, we find that the GW signal from such models can be within the reach of a variety of foreseeable GW experiments such as LISA, AEDGE, ET and CE, and is close to that of LIGO A+, both in terms of frequency range and signal strength. Furthermore, the resultant GW signal is helically polarized and thus may distinguish itself from other sources of stochastic GW background. Finally, such models can produce primordial black holes that can compose dark matter and lead to merger events detectable by GW detectors. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF