Stochastic String Topography and Multivacua
高能物理 - 理论
2007-05-23 v2
摘要
The suggestion that there exist causally disconnected universes or sub-universes to explain the values of physical parameters such as the cosmological constant is discussed. A statistical model of the string landscape/topography is formulated using a stochastic Langevin equation for string and supergravity potentials. A Focker-Planck equation for the probability density of superpotentials is derived and the possible non-supersymmetric multivacua describing string/M-theory topography are investigated. The stochastic fluctuations of the superpotentials and their associated vacuum states can possibly lead to a small positive cosmological constant.
引用
@article{arxiv.hep-th/0408202,
title = {Stochastic String Topography and Multivacua},
author = {J. W. Moffat},
journal= {arXiv preprint arXiv:hep-th/0408202},
year = {2007}
}
备注
15 pages, LaTex file, no figures. Typos corrected. references added