
In this paper, which is an elaboration of our results in hep-th/0504225, we construct new Einstein-Sasaki spaces L^{p,q,r_1,...,r_{n-1}} in all odd dimensions D=2n+1\ge 5. They arise by taking certain BPS limits of the Euclideanised Kerr-de Sitter metrics. This yields local Einstein-Sasaki metrics of cohomogeneity n, with toric U(1)^{n+1} principal orbits, and n real non-trivial parameters. By studying the structure of the degenerate orbits we show that for appropriate choices of the parameters, characterised by the (n+1) coprime integers (p,q,r_1,...,r_{n-1}), the local metrics extend smoothly onto complete and non-singular compact Einstein-Sasaki manifolds L^{p,q,r_1,...,r_{n-1}}. We also construct new complete and non-singular compact Einstein spaces ��^{p,q,r_1,...,r_n} in D=2n+1 that are not Sasakian, by choosing parameters appropriately in the Euclideanised Kerr-de Sitter metrics when no BPS limit is taken.
latex, 26 pages
High Energy Physics - Theory, Special Riemannian manifolds (Einstein, Sasakian, etc.), dS vacua in string theory, High Energy Physics - Theory (hep-th), Kähler-Einstein manifolds, D-branes, FOS: Physical sciences, String and superstring theories; other extended objects (e.g., branes) in quantum field theory, brane dynamics in gauge theories
High Energy Physics - Theory, Special Riemannian manifolds (Einstein, Sasakian, etc.), dS vacua in string theory, High Energy Physics - Theory (hep-th), Kähler-Einstein manifolds, D-branes, FOS: Physical sciences, String and superstring theories; other extended objects (e.g., branes) in quantum field theory, brane dynamics in gauge theories
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