Cosmological Constant from the Entropy Balance Condition

Gogberashvili, Merab  (Javakhishvili Tbilisi State University, 3 Chavchavadze Avenue, Tbilisi 0179, Georgia) (Andronikashvili Institute of Physics, 6 Tamarashvili Street, Tbilisi 0177, Georgia)

26 November 2018

Abstract: In the action formalism variations of metric tensors usually are limited by the Hubble horizon. On the contrary, variations of quantum fields should be extended up to the event horizon, which is the real boundary of the spacetime. As a result the entanglement energy of quantum particles across the apparent horizon is missed in the cosmological equations written for the Hubble volume. We identify this missing boundary term with the dark energy density and express it (using the zero energy assumption for the finite universe) as the critical density multiplied by the ratio of the Hubble and event horizons radii.

Published in: Advances in High Energy Physics 2018 (2018) 3702498
Published by: Hindawi
DOI: 10.1155/2018/3702498
arXiv: 1807.06943v1
License: CC-BY-3.0

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