Comment on “Quantum Raychaudhuri equation”
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DOI: 10.1103/physrevd.95.068501
Abstract: We address the validity of the formalism and results presented in [ S. Das, Phys. Rev. {\bf D89} 084068 (2014)] with regard to quantum Raychaudhuri equation. The author obtained the so called quantum Raychaudhuri equation… read more here.
Keywords: comment quantum; equation; quantum raychaudhuri; raychaudhuri equation ... See more keywords
Raychaudhuri equation in spacetimes with torsion
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DOI: 10.1103/physrevd.96.024021
Abstract: The Authors wish to thank Jose P. S. Lemos for early discussions on a first version of the paper. We thank FCT-Portugal for financial support through Project No. PEst-OE/FIS/UI0099/2015. PL thanks IDPASC and FCT-Portugal for… read more here.
Keywords: spacetimes torsion; equation spacetimes; raychaudhuri equation;
Evolution of universe from Raychaudhuri equation for membranes
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DOI: 10.1142/s0217732319501724
Abstract: We know that in general relativity the Raychaudhuri equation gives the congruence and evolution of the geodesics. In this work, it is proposed that in brane cosmology the Raychaudhuri equation, apart from giving the collapse… read more here.
Keywords: equation membranes; raychaudhuri equation; universe raychaudhuri; equation ... See more keywords