Direct Detection of Primordial Gravitational Waves in a BSI Inflationary Model

Abstract

We investigate the possibility for a direct detection by future space interferometers of the stochastic gravitational wave (GW) background generated during the inflationary stage in a class of viable $\Lambda$CDM BSI models. At frequencies around $10^{-3}$Hz, maximal values ${\Omega }_{gw}(\nu )\sim 3\times 10^{-15}$ are found, an improvement of about one order of magnitude compared to single-field, slow-roll inflationary models. This is presumably not sufficient in order to be probed in the near future.

to appear in Phys. Lett. B, (uses LaTeX, 10 pages)

References in corpus (3)

• Multiple inflation
• CDM models with a BSI steplike primordial spectrum and a cosmological constant
• Parameter extraction by Planck for a CDM model with broken scale invariance and cosmological constant

Cited by in corpus (4)

• Direct detection of the inflationary gravitational wave background
• Prospects for direct detection of primordial gravitational waves
• Primordial Black Holes in an Accelerating Universe
• Scale invariance of the primordial tensor power spectrum