Emergence of inflationary perturbations in the CSL model

Abstract

The inflationary paradigm is the most successful model that explains the observed spectrum of primordial perturbations. However, the precise emergence of such inhomogeneities and the quantum-to-classical transition of the perturbations has not yet reached a consensus among the community. The Continuous Spontaneous Localization model (CSL), in the cosmological context, might be used to provide a solution to the mentioned issues by considering a dynamical reduction of the wave function. The CSL model has been applied to the inflationary universe before and different conclusions have been obtained. In this letter, we use a different approach to implement the CSL model during inflation. In particular, in addition to accounting for the quantum-to-classical transition, we use the CSL model to generate the primordial perturbations, that is, the dynamical evolution provided by the CSL model is responsible for the transition from a homogeneous and isotropic initial state to a final one lacking such symmetries. Our approach leads to results that can be clearly distinguished from preceding works. Specifically, the scalar and tensor power spectra are not time-dependent, and retains the amplification mechanism of the CSL model. Moreover, our framework depends only on one parameter (the CSL parameter) and its value is consistent with cosmological and laboratory observations.

14 pages. Final version. To be published in EPJC

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Cited by in corpus (20)

• Obstructions to Bell CMB Experiments
• Observational constraints on quantum decoherence during inflation
• Does inflation squeeze cosmological perturbations?
• Expectation of primordial gravity waves generated during inflation
• Discussions about the landscape of possibilities for treatments of cosmic inflation involving continuous spontaneous localization models
• Primordial gravitational waves and the collapse of the wave function
• In search of an observational quantum signature of the primordial perturbations in slow-roll and ultra slow-roll inflation
• Constraining quantum collapse inflationary models with current data: The semiclassical approach
• Inflation and the Measurement Problem
• Eternal inflation and the quantum birth of cosmic structure
• Quasi-matter bounce and inflation in the light of the CSL model
• Generation of inflationary perturbations in the continuous spontaneous localization model: The second order power spectrum
• A note on the semiclassicality of cosmological perturbations
• Enlightening the CSL model landscape in inflation
• Emergent universe revisited through the CSL theory
• Novel vacuum conditions in inflationary collapse models
• Emergent universe: tensor perturbations within the CSL framework
• 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
• Constraining tachyonic inflationary β-exponential model with Continuous Spontaneous Localization collapse scheme