Quantum Cosmology Aspects Of D3 Branes and Tachyon Dynamics

Details Quantum Cosmology Aspects Of D3 Branes and Tachyon Dynamics Quantum Cosmology Aspects Of D3 Branes and Tachyon Dynamics

2005-11-27

arxiv.org/abs/hep-th/0511270v3

JHEP0604:042,2006

Physics

High Energy Physics

High Energy Physics - Theory

29 pages, 3 figures, REVTeX 4; v2 clarifications, comments and references added; v3 more typos corrected, additional comments

Scientific paper

10.1088/1126-6708/2006/04/042

We investigate aspects of quantum cosmology in relation to string cosmology systems that are described in terms of the Dirac-Born-Infeld action. Using the Silverstein-Tong model, we analyze the Wheeler-DeWitt equation for the rolling scalar and gravity as well for $R\times{S^3}$ universe, by obtaining the wave functions for all dynamical degrees of freedom of the system. We show, that in some cases one can construct a time dependent version of the Wheeler-DeWitt (WDW) equation for the moduli field $\phi$. We also explore in detail the minisuperspace description of the rolling tachyon when non-minimal gravity tachyon couplings are inserted into the tachyon action.

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