Discussions about the landscape of possibilities for treatments of cosmic inflation involving continuous spontaneous localization models

Abstract

In this work we consider a wide variety of alternatives opened when applying the continuous spontaneous localization (CSL) dynamical collapse theory to the inflationary era. The definitive resolution of many of the issues discussed here will have to await, not only for a general relativistic CSL theory, but for a fully workable theory of quantum gravity. Our concern here is to explore these issues, and to warn against premature conclusions. This exploration includes: two different approaches to deal with quantum field theory and gravitation, the identification of the collapse-generating operator and the general nature and values of the parameters of the CSL theory. All the choices connected with these issues have the potential to dramatically alter the conclusions one can draw. We also argue that the incompatibilities found in a recent paper, between the CSL parameter values and the CMB observational data, are associated with specific choices made for the extrapolation to the cosmological context of the CSL theory (as it is known to work in non-relativistic laboratory situations) which do not represent the most natural ones.

13 pages, 1 Appendix. Minor changes in title and abstract

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Cited by in corpus (13)

• Present status and future challenges of non-interferometric tests of collapse models
• Impact of dynamical collapse models on inflationary cosmology
• On the choice of the collapse operator in cosmological Continuous Spontaneous Localisation (CSL) theories
• Does inflation squeeze cosmological perturbations?
• Enlightening the CSL model landscape in inflation
• A response to criticisms on "CMB Constraints Cast a Shadow on CSL Model"
• Reconstruction of inflationary scenarios in non-conservative unimodular gravity
• A dialog on the fate of information in black hole evaporation
• Emergent universe revisited through the CSL theory
• Emergent universe: tensor perturbations within the CSL framework
• Revisiting astrophysical bounds on continuous spontaneous localization models
• Observational constraints on the second-order primordial power spectrum: Exploring a Continuous Spontaneous Localization inspired inflationary model
• Collapse models and gravitational decoherence at test: How far can we push the limits of quantum mechanics?