Quasi-matter bounce and inflation in the light of the CSL model

Abstract

The Continuous Spontaneous Localization (CSL) model has been proposed as a possible solution to the quantum measurement problem by modifying the Schrödinger equation. In this work, we apply the CSL model to two cosmological models of the early Universe: the matter bounce scenario and slow roll inflation. In particular, we focus on the generation of the classical primordial inhomogeneities and anisotropies that arise from the dynamical evolution, provided by the CSL mechanism, of the quantum state associated to the quantum fields. In each case, we obtained a prediction for the shape and the parameters characterizing the primordial spectra (scalar and tensor), i.e. the amplitude, the spectral index and the tensor-to-scalar ratio. We found that there exist CSL parameter values, allowed by other non-cosmological experiments, for which our predictions for the angular power spectrum of the CMB temperature anisotropy are consistent with the best fit canonical model to the latest data released by the Planck Collaboration.

27 pages, including 6 figures, 2 tables and one Appendix. Final version. Accepted in EPJC

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Cited by in corpus (10)

• The de Broglie-Bohm Quantum Theory and its Application to Quantum Cosmology
• Expectation of primordial gravity waves generated during inflation
• Discussions about the landscape of possibilities for treatments of cosmic inflation involving continuous spontaneous localization models
• Constraining quantum collapse inflationary models with current data: The semiclassical approach
• Eternal inflation and the quantum birth of cosmic structure
• Enlightening the CSL model landscape in inflation
• Emergent universe revisited through the CSL theory
• Quantum-to-classical transition and imprints of continuous spontaneous localization in classical bouncing universes
• Emergent universe: tensor perturbations within the CSL framework
• Constructing an entangled state in Heisenberg picture for inflationary cosmology