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Universe 2017, 3(2), 28;

Quantum Entanglement in the Multiverse

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
Academic Editors: Mariusz P. Dąbrowski, Manuel Krämer and Vincenzo Salzano
Received: 12 January 2017 / Revised: 16 March 2017 / Accepted: 17 March 2017 / Published: 23 March 2017
(This article belongs to the Special Issue Varying Constants and Fundamental Cosmology)
View Full-Text   |   Download PDF [608 KB, uploaded 23 March 2017]   |  


In this report, we consider cosmological implications of quantum entanglement between two causally disconnected universes in the multiverse. Supposing that our universe was initially entangled with a causally separated universe, we compute the spectrum of vacuum fluctuations of our universe. To clearly see the effect of entanglement, we compare it with the spectrum of an initially non-entangled state. It is found that, due to quantum interference, scale-dependent modulations may enter the spectrum for the case of an initially non-entangled state. We discuss that the existence of causally disconnected universes may be experimentally tested by analyzing correlators in detail. View Full-Text
Keywords: quantum entanglement; multiverse; vacuum fluctuations quantum entanglement; multiverse; vacuum fluctuations

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Kanno, S. Quantum Entanglement in the Multiverse. Universe 2017, 3, 28.

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