Pseudo-Riemannian Einstein metrics on noncompact homogeneous spaces
Pseudo-Riemannian Einstein metrics on noncompact homogeneous spaces
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非紧齐次空间上的伪黎曼爱因斯坦度量
DOI:
10.1007/s00022-019-0518-7
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发表时间:
2020-01
影响因子:
0.6
通讯作者:
Yan Zaili
中科院分区:
文献类型:
--
作者:
Yan Zaili
The aim of this work is to study homogeneous pseudo-Riemannian Einstein metrics on noncompact homogeneous spaces. First, we deduce a formula for Ricci tensor of a homogeneous pseudo-Riemannian manifold with compact isotropy subgroup. Based on this formula, we establish a one-to-one correspondence between homogeneous pseudo-Riemannian Einstein metrics on noncompact homogeneous spaces and homogeneous Riemannian Einstein metrics on compact homogeneous spaces. As an application, we prove that every noncompact connected simple Lie group except SL(2) admits at least two nonproportional left invariant pseudo-Riemannian Einstein metrics. Furthermore, we study left invariant pseudo-Riemannian Einstein metrics on solvable Lie groups. By showing that if a nilpotent Lie group admits a left invariant Riemannian Ricci soliton, then it admits a left invariant pseudo-Riemannian Ricci soliton as well, we construct a left invariant pseudo-Riemannian Einstein metric on any given Riemannian standard Einstein solvmanifold.
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影响因子:
0.9
作者:
J. Wolf
通讯作者:
J. Wolf
DOI:
10.1090/s0002-9947-05-04096-1
发表时间:
2005-11
影响因子:
1.3
作者:
C. Böhm;Megan M. Kerr
通讯作者:
C. Böhm;Megan M. Kerr
影响因子:
0.6
作者:
Joon-sik Park;Y. Sakane
通讯作者:
Joon-sik Park;Y. Sakane
影响因子:
1.4
作者:
J. Lauret
通讯作者:
J. Lauret
DOI:
10.1016/j.geomphys.2011.01.004
发表时间:
2009-03
期刊:
The Lancet
影响因子:
--
作者:
G. Gibbons;Hong Lu;Hong Lu;C. Pope;C. Pope
通讯作者:
G. Gibbons;Hong Lu;Hong Lu;C. Pope;C. Pope