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Cosmological Effects of Quantum Vacuum Condensates
Open AccessFeature PaperArticle

Bell Inequality and Its Application to Cosmology

by 1,2,* and 3
Department of Theoretical Physics and History of Science, University of the Basque Country, 48080 Bilbao, Spain
IKERBASQUE, Basque Foundation for Science, Maria Diaz de Haro 3, 48013 Bilbao, Spain
Department of Physics, Kobe University, Kobe 657-8501, Japan
Author to whom correspondence should be addressed.
Galaxies 2017, 5(4), 99;
Received: 9 November 2017 / Revised: 9 December 2017 / Accepted: 11 December 2017 / Published: 12 December 2017
(This article belongs to the Special Issue Cosmology and the Quantum Vacuum)
One of the cornerstones of inflationary cosmology is that primordial density fluctuations have a quantum mechanical origin. However, most physicists consider that such quantum mechanical effects disappear in CMB data due to decoherence. In this conference report, we show that the violation of Bell inequalities in an initial state of our universe increases exponentially with the number of modes to measure in inflation. This indicates that some evidence that our universe has a quantum mechanical origin may survive in CMB data, even if quantum entanglement decays exponentially afterward due to decoherence. View Full-Text
Keywords: quantum entanglement; inflation quantum entanglement; inflation
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Kanno, S.; Soda, J. Bell Inequality and Its Application to Cosmology. Galaxies 2017, 5, 99.

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