Towards the bounce inflationary gravitational wave

Abstract

In bounce inflation scenario, the inflation is singularity-free, while the advantages of inflation are reserved. We analytically calculate the power spectrum of its primordial gravitational waves (GWs), and show a universal result including the physics of the bounce phase. The spectrum acquires a cutoff at large scale, while the oscillation around the cutoff scale is quite drastic, which is determined by the details of bounce. Our work highlights that the primordial GWs at large scale may encode the physics of the bounce ever happened at about $\sim 60$ efolds before inflation.

arXiv comment19 pages, 12 figures

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Cited by in corpus (9)

• Primordial perturbations with pre-inflationary bounce
• Generating enhanced parity-violating gravitational waves during inflation with violation of the null energy condition
• Generating enhanced primordial GWs during inflation with intermittent violation of NEC and diminishment of GW propagating speed
• Probing the primordial universe with gravitational waves detectors
• Parity-violation in bouncing cosmology
• Constraints on brane inflation after Planck 2015: Impacts of the latest local measurement of the Hubble constant
• Interpreting Pulsar Timing Array data of Gravitational Waves with Ekpyrosis-Bouncing Cosmology
• Parity-violating primordial gravitational waves from null energy condition violation
• Smoking-gun signatures of bounce cosmology from echoes of relic gravitational waves