A new perspective on matter coupling in 2d quantum gravity
高能物理 - 理论
2009-10-31 v1 凝聚态物理
广义相对论与量子宇宙学
高能物理 - 格点
摘要
We provide compelling evidence that a previously introduced model of non-perturbative 2d Lorentzian quantum gravity exhibits (two-dimensional) flat-space behaviour when coupled to Ising spins. The evidence comes from both a high-temperature expansion and from Monte Carlo simulations of the combined gravity-matter system. This weak-coupling behaviour lends further support to the conclusion that the Lorentzian model is a genuine alternative to Liouville quantum gravity in two dimensions, with a different, and much `smoother' critical behaviour.
引用
@article{arxiv.hep-th/9904012,
title = {A new perspective on matter coupling in 2d quantum gravity},
author = {J. Ambjorn and K. N. Anagnostopoulos and R. Loll},
journal= {arXiv preprint arXiv:hep-th/9904012},
year = {2009}
}
备注
24 pages, 7 figures (postscript)