Quantum-mechanical twin paradox

Quantum-mechanical twin paradox

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In the twin paradox of special relativity, an observer that travels along an accelerated trajectory at a high velocity will experience a smaller amount of elapsed time than an observer that remains at rest.This illustrates the fact that time is relative unlike the situation in classical physics where time Me 4th of July Dress is absolute.In a recent paper, Bushev et al (2016 New J.Phys.

http://dx.doi.org/10.1088/1367-2630/18/9/093050 18 http://dx.

doi.org/10.1088/1367-2630/18/9/093050 ) showed that the twin paradox can also be demonstrated using a single electron that functions as a quantum-mechanical Braces clock.The wave function of the electron can travel along two different paths simultaneously, which allows a measurement of the difference in proper times along the two trajectories using a single particle.

Quantum interference effects show that time cannot be thought of as a classical parameter even when associated with a single clock or observer.