Abstract
Starting from the Janus solution and its gauge theory dual, we obtain the
dual gauge theory description of the cosmological solution by procedure of the
double anaytic continuation. The coupling is driven either to zero or to
infinity at the big-bang and big-crunch singularities, which are shown to be
related by the S-duality symmetry. In the dual Yang-Mills theory description,
these are non singular at all as the coupling goes to zero in the N=4 Super
Yang-Mills theory. The cosmological singularities simply signal the failure of
the supergravity description of the full type IIB superstring theory.
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