A Local Hidden Variable Model for Positive Operator Valued Measurements on a Class of Entangled Mixed States

We present a local hidden variable model for positive operator valued measurements (an `LHVPOV model') on a class of entangled generalized Werner states. We also show that, in general, if the state $\rho'$ can be obtained from $\rho$ with certainty by local quantum operations without classical communication then an LHVPOV model for the state $\rho$ implies the existence of such a model for $\rho'$.