2016/05/31 by Natacha Altamirano, Paulina Corona-Ugalde, Kiran E Khosla +5 · 9 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Dark energy #Equation of state #Friedmann–Lemaître–Robertson–Walker metric #Observable #Quantum #Quantum Electrodynamics and Casimir Effect #Quantum decoherence #State (computer science) #Universe #Work (physics) #gr-qc #hep-th #quant-ph
paper · pdf · doi:10.1088/1361-6382/aa6d41
published in Classical and Quantum Gravity 34(11), 115007 (IOP Publishing) · 22 pages, 5 figures. Updated version and references
openalex created_date 2016/06/24 · arxiv created 2017/02/27 · openalex publication_date 2017/05/18 · arxiv updated 2017/05/31 · openalex updated_date 2026/08/05
Abstract In this work we consider a recent proposal that gravitational interactions are mediated via classical information and apply it to a relativistic context. We study a toy model of a quantized Friedman–Robertson–Walker (FRW) universe with the assumption that any test particles must feel a classical metric. We show that such a model results in decoherence in the FRW state that manifests itself as a dark energy fluid that fills the spacetime. Analysis of the resulting fluid, shows the equation of state asymptotically oscillates around the value w = −1/3, regardless of the spatial curvature, which provides the bound between accelerating and decelerating expanding FRW cosmologies. Motivated with quantum-classical interactions this model is yet another example of theories with violation of energy-momentum conservation whose signature could have significant consequences for the observable universe.