The tunneling universe in scalar tensor theory with matter: II

Details The tunneling universe in scalar tensor theory with matter: II The tunneling universe in scalar tensor theory with matter: II

Mar 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008cqgra..25e5008l&link_type=abstract

Classical and Quantum Gravity, Volume 25, Issue 5, pp. 055008 (2008).

Physics

1

Scientific paper

In this paper, the wavefunction of the universe with a tunneling boundary condition is considered in the context of the Brans Dicke-type theory with matter. In the \gamma=0 (matter) case, the action is invariant under the field redefinition which is a sort of generalization of the scale factor duality. The universe undergoes quantum transition from a super-inflationary (pre-big bang) to a deflationary (post-big bang) phase. We calculate the transition rate from the wavefunction by solving the Wheeler DeWitt equation and obtain a non-vanishing value. We learn that for a special value of the Brans Dicke parameter the transition rate grows heavily. From the ten-dimensional string theory point of view this happens when three-dimensional branes (D3-brane) become dominant.

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