Primordial enhanced scalar perturbations can source a significant amount of gravitational waves (GWs). Existing studies compute the SGWB produced in the RD-era by the primordial enhanced scalar perturbations with the Green formalism. In this work we review this result by using both Green function method and the in-in formalism, and eventually we go over by evaluating the subdominant contribution from primordial enhanced-scalar & tensor perturbations.
Gravitational waves sourced by primordial scalar perturbations
Grutta, Pietro
2020/2021
Abstract
Primordial enhanced scalar perturbations can source a significant amount of gravitational waves (GWs). Existing studies compute the SGWB produced in the RD-era by the primordial enhanced scalar perturbations with the Green formalism. In this work we review this result by using both Green function method and the in-in formalism, and eventually we go over by evaluating the subdominant contribution from primordial enhanced-scalar & tensor perturbations.File in questo prodotto:
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Utilizza questo identificativo per citare o creare un link a questo documento:
https://hdl.handle.net/20.500.12608/22816