%0 Journal Article
%T A class of Sasakian 5-manifolds
%A Adrian Andrada
%A Anna Fino
%A Luigi Vezzoni
%J Mathematics
%D 2008
%I arXiv
%X We obtain some general results on Sasakian Lie algebras and prove as a consequence that a (2n + 1)-dimensional nilpotent Lie group admitting left-invariant Sasakian structures is isomorphic to the real Heisenberg group $H_{2n + 1}$. Furthermore, we classify Sasakian Lie algebras of dimension 5 and determine which of them carry a Sasakian $\alpha$-Einstein structure. We show that a 5-dimensional solvable Lie group with a left-invariant Sasakian structure and which admits a compact quotient by a discrete subgroup is isomorphic to either $H_5$ or a semidirect product $\R \ltimes (H_3 \times \R)$. In particular, the compact quotient is an $S^1$-bundle over a 4-dimensional K\"ahler solvmanifold.
%U http://arxiv.org/abs/0807.1800v2