Universo eterno? Nunca houve um Big Bang?

sexta-feira, dezembro 18, 2015

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

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

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