Embedding model and de Branges-Rovnyak spaces in Dirichlet spaces

Abstract

In this paper we study embeddings between de Branges-Rovnyak spaces $H(b)$ and harmonically weighted Dirichlet spaces $\mathcal{D}(\mu )$ in terms of the boundary spectrum of $b$ and the support of the measure $\mu$, by using elementary reproducing kernel estimates. We completely characterize the embedding between the model spaces $K_u$ and the local Dirichlet spaces ${\mathcal{D}}_{\zeta }$, and we discuss some applications.