PIRSA Logo


PERIMETER INSTITUTE RECORDED SEMINAR ARCHIVE

PIRSA:07050036  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Non-Anthropic Approaches to the String Landscape
Speaker(s): G. Watson
Abstract: We consider the effect that dynamical selection principles could have on the string landscape and for determining the value of the cosmological constant. The underlying symmetries of string theory, along with the dynamics of moduli in the low energy effective field theory, seem to suggest that not all vacua are created equal. However, in some simple models many vacua are alike and this degeneracy may suggest a *non-anthropic* approach to understanding the observed value of the cosmological constant. The approach may also lead to a viable model of inflation, without the need of fine-tuned potentials.
Date: 19/05/2007 - 4:00 pm
Valid XHTML 1.0!