Lorentz invariance of entanglement classes in multipartite systems

Understand

We analyze multipartite entanglement in systems of spin-1/2 particles from a relativistic perspective.

• General conditions which have to be met for any classification of multipartite entanglement to be Lorentz invariant are derived, which contributes to a physical understanding of entanglement classification.
• We show that quantum information in a relativistic setting requires the partition of the Hilbert space into particles to be taken seriously.
• Furthermore, we study exemplary cases and show how the spin and momentum entanglement transforms relativistically in a multipartite setting.