1102.2544 (K. Scharnhorst)

Entanglement capabilities of the spin representation of (3+1)D-conformal
transformations    [PDF]

K. Scharnhorst

Relying on a mathematical analogy of the pure states of the two-qubit system of quantum information theory with four-component spinors we introduce the concept of the intrinsic entanglement of spinors. To explore its physical sense we study the entanglement capabilities of the spin representation of (pseudo-) conformal transformations in (3+1)-dimensional Minkowski space-time. We find that only those tensor product structures can sensibly be introduced in spinor space for which a given spinor is not entangled.

View original: http://arxiv.org/abs/1102.2544