Physics Letters B
Volume 741, 4 February 2015, Pages 276–279
Cosmology from quantum potential
Ahmed Farag Ali a,b,∗, Saurya Das c
a Center for Fundamental Physics, Zewail City of Science and Technology, Giza, 12588, Egypt
b Dept. of Physics, Faculty of Sciences, Benha University, Benha, 13518, Egypt
c Department of Physics and Astronomy, University of Lethbridge, 4401 University Drive, Lethbridge, Alberta, T1K 3M4, Canada
Source/Fonte: Internet
Abstract
It was shown recently that replacing classical geodesics with quantal (Bohmian) trajectories gives rise to a quantum corrected Raychaudhuri equation (QRE). In this article we derive the second order Friedmann equations from the QRE, and show that this also contains a couple of quantum correction terms, the first of which can be interpreted as cosmological constant (and gives a correct estimate of its observed value), while the second as a radiation term in the early universe, which gets rid of the big-bang singularity and predicts an infinite age of our universe.
© 2015 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license
(http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP.
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