TY - JOUR
T1 - Quantum entanglement in the multiverse
AU - Kanno, Sugumi
N1 - Funding Information:
Acknowledgments: This work was supported by IKERBASQUE, the Basque Foundation for Science and the Basque Government (IT-979-16), and Spanish Ministry MINECO (FPA2015-64041-C2-1P).
Funding Information:
This work was supported by IKERBASQUE, the Basque Foundation for Science and the Basque Government (IT-979-16), and Spanish Ministry MINECO (FPA2015-64041-C2-1P).
Publisher Copyright:
© 2017 by the authors.
PY - 2017/6
Y1 - 2017/6
N2 - 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.
AB - 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.
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U2 - 10.3390/universe3020028
DO - 10.3390/universe3020028
M3 - Article
AN - SCOPUS:85064405899
SN - 2218-1997
VL - 3
JO - Universe
JF - Universe
IS - 2
M1 - 28
ER -