Isometrically embedded polydisks in infinite dimensional Teichmüller spaces

We define isometric holomorphic embeddings of the infinite dimensional polydisk D∞ in any infinite dimensional Teichmüller space. These embeddings provide simple new proofs that the Teichmüller metric on any infinite dimensional Teichmüller space is non-differentiable and has arbitrarily short simple closed geodesics. They also lead to a complete characterization of the points in Teichmüller space that lie on more than one straight line through the basepoint.