Emergent dark energy via decoherence in quantum interactions

Abstract

In this work we consider a recent proposal in which 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 by 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.

arXiv comment22 pages, 5 figures. Updated version and references

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Cited by in corpus (6)

• Gravitational Decoherence
• Gravity is not a Pairwise Local Classical Channel
• Principle of least decoherence for Newtonian semi-classical gravity
• Does gravity have to be quantized? Lessons from non-relativistic toy models
• Gravitational interaction through a feedback mechanism
• Optomechanical analogy for a toy cosmology with a quantized scale factor