Loop-quantum-gravity vertex amplitude

被引：216

作者：

Engle, Jonathan ^{[1
]}

Pereira, Roberto ^{[1
]}

Rovelli, Carlo ^{[1
]}

机构：

[1] Ctr Phys Theor Luminy, F-13288 Marseille, France

来源：

PHYSICAL REVIEW LETTERS | 2007年 / 99卷 / 16期

关键词：

D O I：

10.1103/PhysRevLett.99.161301

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Spin foam models are hoped to provide the dynamics of loop-quantum gravity. However, the most popular of these, the Barrett-Crane model, does not have the good boundary state space and there are indications that it fails to yield good low-energy n-point functions. We present an alternative dynamics that can be derived as a quantization of a Regge discretization of Euclidean general relativity, where second class constraints are imposed weakly. Its state space matches the SO(3) loop gravity one and it yields an SO(4)-covariant vertex amplitude for Euclidean loop gravity.

引用

页数：4

共 51 条

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AKESCI E, COMPLETE LQG PROPAGA

[2] SU(2) loop quantum gravity seen from covariant theory -: art. no. 044009 [J].