PIRSA:17060029 Conference Other

DOI10.48660/17060029

Conference/School: PI Day

Altamirano, N. (2017). Weak measurements, decoherence and cosmology. Perimeter Institute. https://pirsa.org/17060029

Altamirano, Natacha. Weak measurements, decoherence and cosmology. Perimeter Institute, Jun. 01, 2017, https://pirsa.org/17060029 

@misc{ pirsa_PIRSA:17060029,
  doi = {10.48660/17060029},
  url = {https://pirsa.org/17060029},
  author = {Altamirano, Natacha},
  keywords = {Other},
  language = {en},
  title = {Weak measurements, decoherence and cosmology},
  publisher = {Perimeter Institute},
  year = {2017},
  month = {jun},
  note = {PIRSA:17060029 see, \url{https://pirsa.org}}
}

Abstract

In this work we consider a recent proposal in which gravitational interactions are mediated via the exchange of classical information and apply it to 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. 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.

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