High relativistic speed + entanglement

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SUMMARY

This discussion centers on the implications of entangled particles when one is subjected to relativistic speeds, specifically near the speed of light. It concludes that communication through entanglement is impossible, as once one particle is measured, the entanglement is broken, rendering any changes to the other particle ineffective. The principles of quantum mechanics (QM) and special relativity dictate that entanglement remains consistent with Lorentz symmetry, confirming that no information can be transmitted via this phenomenon.

PREREQUISITES
  • Understanding of quantum mechanics principles, particularly entanglement
  • Familiarity with special relativity and Lorentz symmetry
  • Knowledge of the implications of relativistic speeds on time and space
  • Basic grasp of particle physics and measurement effects
NEXT STEPS
  • Study the implications of Lorentz symmetry in quantum mechanics
  • Research the concept of quantum entanglement and its limitations
  • Explore the effects of relativistic speeds on time dilation and simultaneity
  • Investigate the measurement problem in quantum mechanics and its relation to entanglement
USEFUL FOR

Physicists, students of quantum mechanics, and anyone interested in the intersection of quantum theory and relativistic physics will benefit from this discussion.

typical guy
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A thought exercise:
You have entangled particles, leave one on Earth and put the other on a spaceship that is moving close to the speed of light. What happens when you change the rotation of one particle or the other? Given that the speed of light is the speed limit to the universe and that all kinds of things happen with time when you go fast, what exactly would happen if you change the rotation or attempt to "communicate" using entanglement? Is there some upper limit at which you can communicate from one entangled particle to another? Would this result in one particle's destruction?
 
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Hi typical guy, welcome to PF.

AFAIK there is no way to use entanglement to communicate or send any information. Since the modern QM laws are Lorentz symmetric entanglement is compatible with special relativity.
 
You can't communicate using entanglement at all. Once one of the particles is detected, the particles are no longer entangled, so "changing" the spin of one does absolutely nothing for you.
 

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