Quantum Gravity and String Theory


A Universe from Nothing or Big Bounce?

Authors: S.Natarajan, R.Chandramohan

The beginning of the universe is explained by many theoretical aspects. The cosmological evolution begins with the singularity. Such singularities predict the initial conditions of the universe. To deal the singularity there are lots of mathematical models have been proposed. In particular universe from nothing model, that deals the beginning of the universe as nonsingular and initiated out of nothing scenario. Similarly loop quantum cosmology resolves the initial singularity with quantum geometry. That resolution replaces the big bang with big bounce. Initial conditions of the universe in vacuum dominated states and loop quantum cosmological bouncing solutions is analyzed in this work. Minimal scale factor and critical density is analyzed to scrutinize the formation of universe from nothing. It is been interpreted that the universe from vacuum solutions replicate the dark energy dominated final stages of the universe , which leads to cyclic cosmology.

Comments: 6 Pages. article published in IJRAR - International Journal of Research and Analytical Reviews. DoI: http://doi.one/10.1729/Journal.19102

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[v1] 2019-01-15 14:01:08

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