Entanglement in QFT: Free Particle Decay

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SUMMARY

Quantum Field Theory (QFT) can indeed define entanglement in the context of free particle decay. When a free, massive particle decays into two other massive particles, these resultant particles exhibit entanglement in linear momentum. This phenomenon is well-documented and can be explored further through specific examples found in literature, such as the paper referenced with the identifier 1205.1992.

PREREQUISITES
  • Understanding of Quantum Field Theory (QFT)
  • Familiarity with concepts of particle decay
  • Knowledge of entanglement in quantum mechanics
  • Basic grasp of linear momentum in physics
NEXT STEPS
  • Read the paper referenced as http://xxx.lanl.gov/abs/1205.1992 for detailed examples of entanglement in QFT.
  • Study the implications of entanglement in particle physics.
  • Explore the differences between non-relativistic quantum mechanics and QFT regarding entanglement.
  • Investigate other cases of particle decay and their entangled states in QFT.
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Physicists, particularly those specializing in quantum mechanics and quantum field theory, as well as researchers interested in the implications of particle decay and entanglement.

LarryS
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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.
 
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referframe said:
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.

referframe said:
Any examples?
See e.g.
http://xxx.lanl.gov/abs/1205.1992
 

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