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arXiv · 1211.0884

Naturally reductive pseudo-Riemannian Lie groups in low dimensions

Viviana del Barco·Gabriela P. Ovando·Francisco Vittone
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Abstract

This work concerns the non-flat metrics on the Heisenberg Lie group of dimension three $\Heis_3(\RR)$ and the bi-invariant metrics on the solvable Lie groups of dimension four. On $\Heis_3(\RR)$ we prove that the property of the metric being naturally reductive is equivalent to the property of the center being non-degenerate. These metrics are Lorentzian algebraic Ricci solitons. We start with the indecomposable Lie groups of dimension four admitting bi-invariant metrics and which act on $\Heis_3(\RR)$ by isometries and we finally study some geometrical features on these spaces.

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Viviana del Barco, Gabriela P. Ovando, Francisco Vittone. 2012-11-05. Naturally reductive pseudo-Riemannian Lie groups in low dimensions. https://arxiv.org/abs/1211.0884

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