A signature of quantum gravity at the source of the seeds of cosmic structure?

Abstract

This article reviews a recent work by a couple of colleagues and myself about the shortcomings of the standard explanations of the quantum origin of cosmic structure in the inflationary scenario, and a proposal to address them. The point it that in the usual accounts the inhomogeneity and anisotropy of our universe seem to emerge from an exactly homogeneous and isotropic initial state through processes that do not break those symmetries. We argued that some novel aspect of physics must be called upon to able to address the problem in a fully satisfactory way. The proposed approach is inspired on Penrose's ideas regarding an quantum gravity induced, real and dynamical collapse of the wave function.

arXiv commentLateX, (jpconference macros), Prepared for the proceedings the Third International Workshop DICE 2006, " Quantum Mechanics between decoherence and Determinism)

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Cited by in corpus (10)

• Phenomenological analysis of quantum collapse as source of the seeds of cosmic structure
• 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
• The slow roll condition and the amplitude of the primordial spectrum of cosmic fluctuations: Contrasts and similarities of standard account and the "collapse scheme"
• Multiple quantum collapse of the inflaton field and its implications on the birth of cosmic structure
• The collapse of the wave function in the joint metric-matter quantization for inflation
• Origin of structure: Statistical characterization of the primordial density fluctuations and the collapse of the wave function
• Semiclassical Self Consistent Treatment of the Emergence of Seeds of Cosmic Structure. The second order construction
• 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