Observable tensor-to-scalar ratio and secondary gravitational wave background

Abstract

In this paper we will highlight how a simple vacuum energy dominated inflection-point inflation can match the current data from cosmic microwave background radiation, and predict large primordial tensor to scalar ratio, $r\sim \mathcal{O}(10^{-3}-10^{-2})$, with observable second order gravitational wave background, which can be potentially detectable from future experiments, such as DECi-hertz Interferometer Gravitational wave Observatory (DECIGO), Laser Interferometer Space Antenna (eLISA), Cosmic Explorer (CE), and Big Bang Observatory (BBO).

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Cited by in corpus (5)

• Cosmology with the Laser Interferometer Space Antenna
• Primordial Black Holes and Scalar-induced Gravitational Waves in Radiative Hybrid Inflation
• Inflection-point Inflation and Dark Matter Redux
• Primordial Black Holes and Scalar-induced Gravitational Waves in Sneutrino Hybrid Inflation
• Primordial Black Holes and Second-order Gravitational Waves in Axion-like Hybrid Inflation