Extended Tensor Products and Generalization of the Notion of   Entanglement
  Motivated by the novel applications of the mathematical formalism of quantum theory and its generalizations in cognitive science, psychology, social and political sciences, and economics, we extend the notion of the tensor product and entanglement. We also study the relation between conventional entanglement of complex qubits and our generalized entanglement. Our construction can also be used to describe entanglement in the framework of non-Archimedean physics. It is also possible to construct tensor products of non-Archimedean (e.g., $p$-adic) and complex Hilbert spaces. 
Andrei Khrennikov and Elemer E. Rosinger
physics.gen-ph math-ph math.MP quant-ph