文摘
Let be a Schrxf6;dinger operator on the Heisenberg group , where is the sub-Laplacian and the nonnegative potential V belongs to the reverse Hxf6;lder class . Here Q is the homogeneous dimension of . In this article we investigate the dual space of the Hardy-type space associated with the Schrxf6;dinger operator L, which is a kind of BMO-type space defined by means of a revised sharp function related to the potential V. We give the Fefferman–Stein type decomposition of BMOL-functions with respect to the (adjoint) Riesz transforms for L, and characterize in terms of the Carleson measure. We also establish the BMOL-boundedness of some operators, such as the (adjoint) Riesz transforms , the Littlewood–Paley function , the Lusin area integral , the Hardy–Littlewood maximal function, and the semigroup maximal function. All results hold for stratified groups as well.