Friday, April 27, 2012

1204.5177 (Yoske Sumitomo et al.)

A Stringy Mechanism for A Small Cosmological Constant    [PDF]

Yoske Sumitomo, S. -H. Henry Tye
Based on the probability distributions of products of random variables, we propose a simple stringy mechanism that prefers the meta-stable vacua with a small cosmological constant. We state some relevant properties of the probability distributions of functions of random variables. We then illustrate the mechanism within the flux compactification models in Type IIB string theory. As a result of the stringy dynamics, we argue that the generic probability distribution for the meta-stable vacua typically peaks with a divergent behavior at the zero value of the cosmological constant. However, its suppression in the single modulus model studied here is modest.
View original: http://arxiv.org/abs/1204.5177

No comments:

Post a Comment