Posted: Sep 17, 2011 6:46 am
by Schneibster
twistor59 wrote:my understanding (maybe wrong ?) of the string landscape is that it's a landscape of possible theories, which is something not quite as nice like.
No, you're right, but not directly. The dimensions of the manifold (because it's actually N-dimensional, not a 2D "relief map") represent various parameters of the Calabi-Yau manifold, their values resulting in varying physics and determining "position" on the "landscape," IIUC in terms of relative force strengths as well as particle types and masses. It's a metaphor, not a piece of physics.

I got that from Susskind The Cosmic Landscape, 2006.

ETA: I skimmed the first three pages. Bookmarked. This will be a fun thread. Thanks for this.