Standard Tractors and the Conformal Ambient Metric Construction

Standard Tractors and the Conformal Ambient Metric Construction
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标准拖拉机和保形环境公制结构

DOI:
10.1023/a:1024726607595
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发表时间:
2002
影响因子:
0.7
通讯作者:
A. R. Gover
A. R. Gover
中科院分区:
数学4区
文献类型:
--
作者:
A. Čap;A. R. Gover

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本文通过正则Cartan联络将共形流形的Festerman-Graham环境度量构造与共形几何的方法联系起来。我们证明了从满足通常正规化条件的弱化的任何环境度量出发,可以构造出与Cartan丛和Cartan联络等价的共形标准拖拉机丛和正规标准拖拉机联络.这一结果被应用于获得一个程序,以获得所有的共形不变量,可以从周围的度量结构得到的拖拉机公式。我们还得到信息的环境度量which是Ricci平坦的高阶比保证的结果ofFriedman-格雷厄姆。
In this paper we relate the Fefferman–Graham ambientmetric construction for conformal manifolds to the approach toconformal geometry via the canonical Cartan connection. We show thatfrom any ambient metric that satisfies a weakening of the usualnormalisation condition, one can construct the conformal standardtractor bundle and the normal standard tractor connection, which areequivalent to the Cartan bundle and the Cartan connection. This resultis applied to obtain a procedure to get tractor formulae for allconformal invariants that can be obtained from the ambient metricconstruction. We also get information on ambient metrics whichare Ricci flat to higher order than guaranteed by the results ofFefferman–Graham.
CR 不变量的环境度量构造
DOI: --
发表时间: 2007
期刊: IMA in Math.and Appl. 144
影响因子: --
作者:
M.E.Dokukin;K.Togo;and M.Inoue;武田 三男;K. Hirachi
通讯作者: K. Hirachi