Comments on noncommutative gravity
高能物理 - 理论
2010-11-11 v3 广义相对论与量子宇宙学
摘要
We study the possibility of obtaining noncommutative gravity dynamics from string theory in the Seiberg-Witten limit. We find that the resulting low-energy theory contains more interaction terms than those proposed in noncommutative deformations of gravity. The role of twisted diffeomorphisms in string theory is studied and it is found that they are not standard physical symmetries. It is argued that this might be the reason why twisted diffeomorphisms are not preserved by string theory in the low energy limit. Twisted gauge transformations are also discussed.
引用
@article{arxiv.hep-th/0605113,
title = {Comments on noncommutative gravity},
author = {Luis Alvarez-Gaume and Frank Meyer and Miguel A. Vazquez-Mozo},
journal= {arXiv preprint arXiv:hep-th/0605113},
year = {2010}
}
备注
37 pages. Typos corrected. Final version to appear in Nuclear Physics B