Google TechTalks
May 24, 2006
Washington Taylor
ABSTRACT
Recent developments in string theory, combined with the experimental observation that the rate of expansion of the universe is increasing, have led theoretical physicists to a radical (and controversial) new picture of the universe. In this new picture, the universe is enormously larger than our parochial observable region of radius 13.7 light years.
In other patches of the universe, the laws of physics may be quite different, though in each patch the local physics is governed by a metastable solution of string theory. Since there may be something like $10^{1000}$ or more distinct solutions of string theory giving physics roughly like…