Adiabatic perturbations and minimal size of the de Sitter vacuum

Details Adiabatic perturbations and minimal size of the de Sitter vacuum Adiabatic perturbations and minimal size of the de Sitter vacuum

Aug 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991phlb..266..275g&link_type=abstract

Physics Letters B, Volume 266, Issue 3-4, p. 275-279.

Physics

7

Scientific paper

We consider transitions for a higher dimensional to a lower dimensional de Sitter phase. We show that, if the transitions are adiabatic, the evolution necessarily passes through a state of maximal curvature (minimal size). This minimal size depends only on the total entropy content, but the dependence is so weak that no fine tuning is needed in order to set the minimum at the Planck scale.

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