Mabuchi geometry of big cohomology classes

Abstract Let X be a compact Kähler manifold. Fix a big ( 1 , 1 ) {(1,1)} -cohomology class α with smooth representative θ. We study the spaces ℰ p ⁢ ( X , θ ) {\mathcal{E}^{p}(X,\theta)} of finite energy Kähler potentials for each p ≥ 1 {p\geq 1} . We define a metric d p {d_{p}} without using the Finsler geometry nor solving Monge–Ampère-type equations. This construction generalizes the usual d p {d_{p}} -metric defined for an ample class.