Inflationary gravitational waves in collapse scheme models

Abstract

The inflationary paradigm is an important cornerstone of the concordance cosmological model. However, standard inflation cannot fully address the transition from an early homogeneous and isotropic stage, to another one lacking such symmetries corresponding to our present universe. In previous works, a self-induced collapse of the wave function has been suggested as the missing ingredient of inflation. Most of the analysis regarding the collapse hypothesis has been solely focused on the characteristics of the spectrum associated to scalar perturbations, and within a semiclassical gravity framework. In this Letter, working in terms of a joint metric-matter quantization for inflation, we calculate, for the first time, the tensor power spectrum and the tensor-to-scalar ratio corresponding to the amplitude of primordial gravitational waves resulting from considering a generic self-induced collapse.

10 pages. Improved version. Replaced to match version to be published in Phys. Lett. B

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Cited by in corpus (9)

• Impact of dynamical collapse models on inflationary cosmology
• Emergence of inflationary perturbations in the CSL model
• Expectation of primordial gravity waves generated during inflation
• Constraining quantum collapse inflationary models with current data: The semiclassical approach
• Primordial gravitational waves and the collapse of the wave function
• Enlightening the CSL model landscape in inflation
• Emergent universe: tensor perturbations within the CSL framework
• Emergent universe revisited through the CSL theory
• Observational constraints on inflationary potentials within the quantum collapse framework