Circular strings, wormholes and minimum size
高能物理 - 理论
2009-10-30 v2 广义相对论与量子宇宙学
摘要
The quantization of circular strings in an anti-de Sitter background spacetime is performed, obtaining a discrete spectrum for the string mass. A comparison with a four-dimensional homogeneous and isotropic spacetime coupled to a conformal scalar field shows that the string radius and the scale factor have the same classical solutions and that the quantum theories of these two models are formally equivalent. However, the physically relevant observables of these two systems have different spectra, although they are related to each other by a specific one-to-one transformation. We finally obtain a discrete spectrum for the spacetime size of both systems, which presents a nonvanishing lower bound.
引用
@article{arxiv.hep-th/9608004,
title = {Circular strings, wormholes and minimum size},
author = {Luis J. Garay and Pedro F. Gonzalez-Diaz and Guillermo A. Mena Marugan and Jose M. Raya},
journal= {arXiv preprint arXiv:hep-th/9608004},
year = {2009}
}
备注
11 pages, LaTeX2e, minor changes