International Journal of Mathematics and Mathematical Sciences (Jan 2009)
Schatten Class Toeplitz Operators on the Bergman Space
Abstract
We have shown that if the Toeplitz operator Tϕ on the Bergman space La2(𝔻) belongs to the Schatten class Sp,1≤p<∞, then ϕ˜∈Lp(𝔻,dλ), where ϕ˜ is the Berezin transform of ϕ,dλ(z)=dA(z)/(1−|z|2)2, and dA(z) is the normalized area measure on the open unit disk 𝔻. Further, if ϕ∈Lp(𝔻,dλ) then ϕ˜∈Lp(𝔻,dλ) and Tϕ∈Sp. For certain subclasses of L∞(𝔻), necessary and sufficient conditions characterizing Schatten class Toeplitz operators are also obtained.