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- W3101223669 endingPage "007" @default.
- W3101223669 startingPage "007" @default.
- W3101223669 abstract "We study the observational signatures from particle production of a $U(1)$ gauge field kinetically coupled to an inflaton. Regarding the form of gauge kinetic function, we consider the possibility that it becomes stabilized at a certain time, which makes the growing power of the gauge field evolve non-monotonically with a sharp transition. Remarkably, the copious production of the gauge field occurs on super-horizon scales at the late stage of inflation and perturbations are enhanced on the intermediate scales during inflation. We find that it can predict a bumpy shape of the curvature power spectrum which leads to the generation of primordial black holes as a dark matter after inflation. We also estimate two types of tensor modes sourced by the gauge field: the primordial gravitational waves generated during inflation and the induced gravitational waves provided by the enhanced curvature perturbation after inflation. We show that both of them are potentially testable with the future space-based gravitational wave interferometers." @default.
- W3101223669 created "2020-11-23" @default.
- W3101223669 creator A5011900374 @default.
- W3101223669 creator A5046941277 @default.
- W3101223669 creator A5049218749 @default.
- W3101223669 date "2020-05-05" @default.
- W3101223669 modified "2023-10-11" @default.
- W3101223669 title "Generation of primordial black holes and gravitational waves from dilaton-gauge field dynamics" @default.
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