Singularity: Raychaudhuri
equation once again
NARESH DADHICH
Inter-University Centre for Astronomy and Astrophysics,
Post Bag 4, Pune 411 007,
E-mail: nkd@iucaa.ernet.in
Abstract. I first
recount Raychaudhuri's deep involvement with the
singularity problem in general
relativity. I then argue that precisely
the same situation has arisen today
in loop quantum cosmology as
obtained when Raychaudhuri
discovered his celebrated equation. We thus
need a new analogue of the Raychaudhuri equation in quantum gravity.
Keywords. Cosmology; Raychaudhuri
equation; Universe; quantum
gravity; loop quantum gravity; loop
quantum cosmology.
PACS Nos 04.20.Jb; 04.2.Cv; 98.80.Dr