  We develop a geometric method to establish existence and uniqueness of
equilibrium states associated to some H\"older potentials for center isometries
(as are regular elements of Anosov actions), in particular the entropy
maximizing measure and the SRB measure. It is also given a characterization of
equilibrium states in terms of their disintegrations along stable and unstable
foliations. Finally, we show that the resulting system is isomorphic to a
Bernoulli scheme.
