中文

Can we predict $\Lambda$ for the Non-SUSY sector of the Landscape ?

高能物理 - 理论 2009-11-11 v2 广义相对论与量子宇宙学 高能物理 - 唯象学

摘要

We propose a new selection criteria for predicting the most probable wavefunction of the universe that propagates on the string landscape background, by studying its dynamics from a quantum cosmology view. Previously we applied this proposal to the SUSYSUSY sector of the landscape. In this work the dynamic selection criterion is applied to the investigation of the non-SUSYSUSY sector.In the absence of detailed information about its structure, it is assumed that this sector has a stochastic distribution of vacua energies.The calculation of a distribution probability for the cosmological constants Λeff\Lambda_{eff}, obtained from the density of states ρ\rho, indicates that the most probable wavefunction is peaked around universes with zero Λeff\Lambda_{eff}. In contrast to the {\it extended wavefunction} solutions found for the SUSYSUSY sector with NN-vacua and peaked around Λeff1N2\Lambda_{eff}\simeq \frac{1}{N^2}, wavefunctions residing on the non-SUSYSUSY sector exhibit {\it Anderson localization}.Although minisuperspace is a limited approach it presently provides a dynamical quantum selection rule for the most probable vacua solution from the landscape.

引用

@article{arxiv.hep-th/0504026,
  title  = {Can we predict $\Lambda$ for the Non-SUSY sector of the Landscape ?},
  author = {Laura Mersini-Houghton},
  journal= {arXiv preprint arXiv:hep-th/0504026},
  year   = {2009}
}

备注

6 pages, 1 figure