Entanglement in QFT: Free Particle Decay

[LarryS]

All definitions of entanglement, that I have encountered, were expressed in the language of non-relativistic QM.

Suppose a free, massive particle decays into 2 other massive particles. The 2 new particles would be entangled in linear momentum. Can QFT define that type of entanglement? Any examples?

Thanks in advance.

 

[Demystifier]

All definitions of entanglement, that I have encountered, were expressed in the language of non-relativistic QM.

Suppose a free, massive particle decays into 2 other massive particles. The 2 new particles would be entangled in linear momentum. Can QFT define that type of entanglement?

Yes.

Any examples?

See e.g.
http://xxx.lanl.gov/abs/1205.1992