Multiple quantum collapse of the inflaton field and its implications on the birth of cosmic structure

Abstract

The standard inflationary account for the origin of cosmic structure is, without a doubt, extremely successful. However, it is not fully satisfactory as has been argued in [A. Perez, H. Sahlmann, and D. Sudarsky, Class. Quantum Grav., 23, 2317, (2006), arXiv:gr-qc/0508100]. The central point is that, in the standard accounts, the inhomogeneity and anisotropy of our universe seems to emerge, unexplained, from an exactly homogeneous and isotropic initial state through processes that do not break those symmetries. The proposal made there to address this shortcoming calls for a dynamical and self-induced quantum collapse of the original homogeneous and isotropic state of the inflaton. In this article, we consider the possibility of a multiplicity of collapses in each one of the modes of the Quantum Field. As we will see, the results are sensitive to a more detailed characterization of the collapse than those studied in the previous works, and in this regard two simple options will be studied. We find important constraints on the model, most remarkably on the number of possible collapses for each mode.

26 pages

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Cited by in corpus (20)

• Towards a formal description of the collapse approach to the inflationary origin of the seeds of cosmic structure
• Cosmological constraints on non-standard inflationary quantum collapse models
• Quantum origin of the primordial fluctuation spectrum and its statistics
• The collapse of the wave function in the joint metric-matter quantization for inflation
• Reassessing the link between B-modes and inflation
• 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 CMB data
• Origin of structure: Statistical characterization of the primordial density fluctuations and the collapse of the wave function
• A Non-static Quantum inspired Spacetime in $f(R)$ Gravity: Gravity's Rainbow
• Constraining quantum collapse inflationary models with current data: The semiclassical approach
• Primordial gravitational waves and the collapse of the wave function
• Inflation including collapse of the wave function: The quasi-de Sitter case
• Inhomogeneities from quantum collapse scheme without inflation
• Inflationary gravitational waves in collapse scheme models
• Novel Possibility of Nonstandard Statistics in the Inflationary Spectrum of Primordial Inhomogeneities
• Quantum collapse as source of the seeds of cosmic structure during the radiation era
• A dialog on the fate of information in black hole evaporation
• Novel vacuum conditions in inflationary collapse models
• Observational constraints on inflationary potentials within the quantum collapse framework