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.

arXiv comment13 pages, 1 Appendix. Minor changes in title and abstract

References in corpus (26)

• Dynamical Reduction Models
• The Spin Foam Approach to Quantum Gravity
• Gravitation and quantummechanical localization of macroobjects
• Relativistic state reduction dynamics
• On the quantum origin of the seeds of cosmic structure
• Shortcomings in the Understanding of Why Cosmological Perturbations Look Classical
• Cosmological Inflation and the Quantum Measurement Problem
• Sourcing semiclassical gravity from spontaneously localized quantum matter
• CSL Wave Function Collapse Model as a Mechanism for the Emergence of Cosmological Asymmetries in Inflation
• Why Eppley and Hannah's Experiment Isn't
• Gravity, energy conservation and parameter values in collapse models
• A Relativistic Dynamical Collapse Model
• Non-Paradoxical Loss of Information in Black Hole Evaporation in a Quantum Collapse Model
• Phenomenological analysis of quantum collapse as source of the seeds of cosmic structure
• A cosmic shadow on CSL
• Towards a formal description of the collapse approach to the inflationary origin of the seeds of cosmic structure
• Relativistically Invariant Markovian Dynamical Collapse Theories Must Employ Nonstandard Degrees of Freedom
• Simple Refutation of the Eppley-Hannah argument
• Relativistic collapse dynamics and black hole information loss
• Multiple quantum collapse of the inflaton field and its implications on the birth of cosmic structure
• Emergence of inflationary perturbations in the CSL model
• Generally covariant dynamical reduction models and the Hadamard condition
• Reassessing the link between B-modes and inflation
• Expectation of primordial gravity waves generated during inflation
• Semiclassical Self Consistent Treatment of the Emergence of Seeds of Cosmic Structure. The second order construction
• Quasi-matter bounce and inflation in the light of the CSL model

Cited by in corpus (14)

• 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 dialog on the fate of information in black hole evaporation
• Reconstruction of inflationary scenarios in non-conservative unimodular gravity
• A response to criticisms on "CMB Constraints Cast a Shadow on CSL Model"
• Quantum-to-classical transition and imprints of continuous spontaneous localization in classical bouncing universes
• Emergent universe: tensor perturbations within the CSL framework
• Emergent universe revisited through the CSL theory
• 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?