From Big Crunch to Big Bang: A Quantum String Cosmology Perspective
Jnanadeva Maharana
TL;DR
This paper explores a quantum string cosmology model where the universe transitions from contraction to expansion, solving the Wheeler-De Witt equation exactly and analyzing S-duality invariant solutions in type IIB string theory.
Contribution
It provides exact solutions to the Wheeler-De Witt equation in a quantum string cosmology framework, incorporating S-duality invariance for the first time.
Findings
Exact solutions to Wheeler-De Witt equation with exponential dilaton potential.
Demonstration of a universe transitioning from big crunch to big bang in quantum string cosmology.
Analysis of S-duality invariant cosmological solutions in type IIB theory.
Abstract
The scenario that the Universe contracts towards a big crunch and then undergoes a transition to expanding Universe in envisaged in the quantum string cosmology approach. The Wheeler-De Witt equation is solved exactly for an exponential dilaton potential. S-duality invariant cosmological effective action, for type IIB theory, is considered to derive classical solutions and solve WDW equations.
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