On the correctness of cosmology from quantum potential
Lashin, E.I.;
Abstract
We examine in detail the cosmology based on quantal (Bohmian) trajectories as suggested in a recent study [A. F. Ali and S. Das, Phys. Lett. B 741, 276 (2014)]. We disagree with the conclusions regarding predicting the value of the cosmological constant Λ and evading the Big Bang singularity. Furthermore, we show that the approach of using a quantum corrected Raychaudhuri equation (QRE), as suggested in A. F. Ali and S. Das, Phys. Lett. B 741, 276 (2014), is unsatisfactory, because, essentially, it uses the Raychaudhuri equation (RE), which is a kinematical equation, in order to predict dynamics. In addition, even within this inconsistent framework, the authors have adopted unjustified assumptions and carried out incorrect steps leading to doubtful conclusions.
Other data
Title | On the correctness of cosmology from quantum potential | Authors | Lashin, E.I. | Keywords | Gravitation; cosmology; Raychaudhuri equation; Bohmian trajectories; gravitational collapse | Issue Date | 2016 | Publisher | World Scientific | Journal | Modern Physics Letters A | DOI | http://www.scopus.com/inward/record.url?eid=2-s2.0-84960462501&partnerID=MN8TOARS 10.1142/S0217732316500449 |
Scopus ID | 2-s2.0-84960462501 |
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