2017/01/31 by M. Pieroni, Mauro Pieroni
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmic background radiation #Cosmic microwave background #Cosmology and Gravitation Theories #Gravitational wave #Inflaton #Non-Gaussianity #Observable #Pulsars and Gravitational Waves Research #Universality (dynamical systems) #astro-ph.CO #gr-qc #hep-ph
paper · pdf · doi:10.1088/1742-6596/840/1/012033
published in Journal of Physics Conference Series 840(1), 012033 (IOP Publishing)
arxiv created 2017/01/31 · openalex created_date 2017/02/10 · openalex publication_date 2017/05/01 · arxiv updated 2017/09/04 · openalex updated_date 2026/08/06
Abstract In this contribution we discuss the possibility of generating an observable gravitational wave (GW) background by coupling a pseudo-scalar inflaton to some Abelian gauge fields. This analysis is performed by dividing inflationary models into universality classes. We find that of the most promising scenario is a Starobinsky-like model, which may lead to the generation of observational signatures both in upcoming CMB detectors as well as for direct GW detectors. The signal which can be produced in these models would both be observable in ground-based detectors, such as advanced LIGO, and in space-based detectors, such as LISA. The complementarity between the CMB and direct GW detection may be used to extract informations on the microphysics of inflation. Interestingly the mechanism discussed in this contribution may also be relevant for the generation of Primordial Black Holes (PBHs).