Fefferman-Graham ambient metrics of Patterson-Walker metrics

Abstract

Given an $n$-dimensional manifold $N$ with an affine connection $D$, we show that the associated Patterson-Walker metric $g$ on $T^{\ast }N$ admits a global and explicit Fefferman-Graham ambient metric. This provides a new and large class of conformal structures which are generically not conformally Einstein but for which the ambient metric exists to all orders and can be realized in a natural and explicit way. In particular, it follows that Patterson-Walker metrics have vanishing Fefferman-Graham obstruction tensors. As an application of the concrete ambient metric realization we show in addition that Patterson-Walker metrics have vanishing Q-curvature.

References in corpus (3)

• Explicit ambient metrics and holonomy
• Conformal Patterson-Walker metrics
• Conformal Walker metrics and linear Fefferman-Graham equations

Cited by in corpus (2)

• A Projective-to-Conformal Fefferman-Type Construction
• Induced almost para-Kähler Einstein metrics on cotangent bundles