Higher order geometric flows on three dimensional locally homogeneous spaces

Details Higher order geometric flows on three dimensional locally homogeneous spaces Higher order geometric flows on three dimensional locally homogeneous spaces

2011-08-02

arxiv.org/abs/1108.0526v3

Mathematics

Differential Geometry

Two new tables, few corrections, three figures, some new references have been added

Scientific paper

We analyse second order (in Riemann curvature) geometric flows (un-normalised) on locally homogeneous three manifolds and look for specific features through the solutions (analytic whereever possible, otherwise numerical) of the evolution equations. Several novelties appear in the context of scale factor evolution, fixed curves, phase portraits, approaches to singular metrics, isotropisation and curvature scalar evolution. The distinguishing features linked to the presence of the second order term in the flow equation are pointed out. Throughout the article, we compare the results obtained, with the corresponding results for un-normalized Ricci flows.

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