  In this paper it is shown that the quantum state of a multiverse made up of
classically disconnected regions of the space-time, whose dynamical evolution
is dominated by a homogeneous and isotropic fluid, is given by a squeezed
state. These are typical quantum states that have no classical counterpart and,
therefore, they allow us to analyze the violation of classical inequalities as
well as the EPR argument in the context of the quantum multiverse. The
thermodynamical properties of entanglement are calculated for a composite
quantum state of two universes whose states are quantum mechanically
correlated. The energy of entanglement between the positive and negative modes
of a scalar field, which correspond to the expanding and contracting branches
of a phantom universe, respectively, are also computed.
