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

• URL: http://arxiv.org/abs/2008.05285v2
• Date: Fri, 6 Nov 2020 02:26:50 GMT
• Title: Discussions about the landscape of possibilities for treatments of cosmic inflation involving continuous spontaneous localization models
• Authors: Gabriel R. Bengochea, Gabriel Le\'on, Philip Pearle, Daniel Sudarsky
• Abstract summary: 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.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• 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.

Related papers

• Quantum Non-classicality from Causal Data Fusion [0.8437187555622164]
  Bell's theorem shows that quantum correlations are incompatible with a classical theory of cause and effect. We investigate the problem of causal data fusion that aims to piece together data tables collected under heterogeneous conditions. We demonstrate the existence of quantum non-classicality resulting from data fusion, even in scenarios where achieving standard Bell non-classicality is impossible.
  arXiv  Detail & Related papers  (2024-05-29T16:35:59Z)
• Relaxation of first-class constraints and the quantization of gauge theories: from "matter without matter" to the reappearance of time in quantum gravity [72.27323884094953]
  We make a conceptual overview of an approach to the initial-value problem in canonical gauge theories. We stress how the first-class phase-space constraints may be relaxed if we interpret them as fixing the values of new degrees of freedom.
  arXiv  Detail & Related papers  (2024-02-19T19:00:02Z)
• A Measure-Theoretic Axiomatisation of Causality [55.6970314129444]
  We argue in favour of taking Kolmogorov's measure-theoretic axiomatisation of probability as the starting point towards an axiomatisation of causality. Our proposed framework is rigorously grounded in measure theory, but it also sheds light on long-standing limitations of existing frameworks.
  arXiv  Detail & Related papers  (2023-05-19T13:15:48Z)
• From locality to irregularity: Introducing local quenches in massive scalar field theory [68.8204255655161]
  We consider the dynamics of excited local states in massive scalar field theory in an arbitrary spacetime dimension. We identify different regimes of their evolution depending on the values of the field mass and the quench regularization parameter. We also investigate the local quenches in massive scalar field theory on a cylinder and show that they cause an erratic and chaotic-like evolution of observables.
  arXiv  Detail & Related papers  (2022-05-24T18:00:07Z)
• Quantum dynamics corresponding to chaotic BKL scenario [62.997667081978825]
  Quantization smears the gravitational singularity avoiding its localization in the configuration space. Results suggest that the generic singularity of general relativity can be avoided at quantum level.
  arXiv  Detail & Related papers  (2022-04-24T13:32:45Z)
• Emergent universe revisited through the CSL theory [0.0]
  We analyze how the spectrum of primordial scalar perturbations is modified, within the emergent universe scenario. On the other hand, a phase of super-inflation, prior to slow-roll inflation, is a characteristic feature of the emergent universe hypothesis.
  arXiv  Detail & Related papers  (2021-08-02T13:38:04Z)
• Discovering Latent Causal Variables via Mechanism Sparsity: A New Principle for Nonlinear ICA [81.4991350761909]
  Independent component analysis (ICA) refers to an ensemble of methods which formalize this goal and provide estimation procedure for practical application. We show that the latent variables can be recovered up to a permutation if one regularizes the latent mechanisms to be sparse.
  arXiv  Detail & Related papers  (2021-07-21T14:22:14Z)
• Enlightening the CSL model landscape in inflation [0.0]
  We propose a novel realization for the natural extrapolation of the continuous spontaneous localization (CSL) model. We obtain a nearly scale invariant power spectrum consistent with recent observational CMB data. This opens a vast landscape of different options for the application of the CSL model to the cosmological context.
  arXiv  Detail & Related papers  (2021-07-12T14:37:02Z)
• On the choice of the collapse operator in cosmological Continuous Spontaneous Localisation (CSL) theories [0.0]
  We show that, if the collapse operator is even in the field variables, it is unable to induce the collapse of the wavefunction. We conclude that the cosmological CSL collapse operator should be linear in the field variables.
  arXiv  Detail & Related papers  (2021-03-02T13:00:30Z)
• Experimental certification of nonclassicality via phase-space inequalities [58.720142291102135]
  We present the first experimental implementation of the recently introduced phase-space inequalities for nonclassicality certification. We demonstrate the practicality and sensitivity of this approach by studying nonclassicality of a family of noisy and lossy quantum states of light.
  arXiv  Detail & Related papers  (2020-10-01T09:03:52Z)
• Comment on "Cosmic Microwave Background Constraints Cast a Shadow On Continuous Spontaneous Localization Models" [0.0]
  We argue that, for most natural choices, the direct application of the continuous spontaneous localization (CSL) theory to the inflationary case is ruled out by observational data. We point out that such results are based on the consideration of a rather narrow set of choices for the application of the theory to the cosmological context.
  arXiv  Detail & Related papers  (2020-06-07T00:44:25Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.