Primordial gravitational waves and the collapse of the wave function

Abstract

"The self-induced collapse hypothesis" was introduced by D. Sudarsky and collaborators to explain the origin of cosmic structure from a perfect isotropic and homogeneous universe during the inflationary regime. In this paper, we calculate the power spectrum for the tensor modes, within the semiclassical gravity approximation, with the additional hypothesis of a generic self-induced collapse of the inflaton's wave function; we also compute an estimate for the tensor-to-scalar ratio. Based on this calculation, we show that the considered proposal exhibits a strong suppression of the tensor modes amplitude; nevertheless, the corresponding amplitude is still consistent with the joint BICEP/KECK and Planck Collaboration's limit on the tensor-to-scalar ratio.

18 pages, 2 figures. Replaced to match published version

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Cited by in corpus (13)

• Emergence of inflationary perturbations in the CSL model
• Reassessing the link between B-modes and inflation
• Expectation of primordial gravity waves generated during inflation
• Constraining quantum collapse inflationary models with CMB data
• Constraining quantum collapse inflationary models with current data: The semiclassical approach
• Inflationary gravitational waves in collapse scheme models
• Generation of inflationary perturbations in the continuous spontaneous localization model: The second order power spectrum
• Enlightening the CSL model landscape in inflation
• Emergent universe revisited through the CSL theory
• Emergent universe: tensor perturbations within the CSL framework
• Novel vacuum conditions in inflationary collapse models
• Observational constraints on inflationary potentials within the quantum collapse framework
• Observational constraints on the second-order primordial power spectrum: Exploring a Continuous Spontaneous Localization inspired inflationary model