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
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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