Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4606297 | Differential Geometry and its Applications | 2012 | 13 Pages |
Abstract
In this paper, we study Ricci-flat (α,β)(α,β)-metrics which are defined by a Riemann metric α and a 1-form β on a C∞C∞ manifold M . We prove that an (α,β)(α,β)-metric of Randers type is Ricci-flat Douglas metric if and only if it is a Berwald metric and α is Ricci-flat. Further, we characterize completely Ricci-flat Douglas (α,β)(α,β)-metrics of non-Randers type on M when the dimension dimM⩾3.
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Physical Sciences and Engineering
Mathematics
Analysis
Authors
Yanfang Tian, Xinyue Cheng,