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https://doi.org/10.1103/PhysRevA.87.042102
Title: | Wigner rotations and an apparent paradox in relativistic quantum information | Authors: | Saldanha, P.L. Vedral, V. |
Issue Date: | 3-Apr-2013 | Citation: | Saldanha, P.L., Vedral, V. (2013-04-03). Wigner rotations and an apparent paradox in relativistic quantum information. Physical Review A - Atomic, Molecular, and Optical Physics 87 (4) : -. ScholarBank@NUS Repository. https://doi.org/10.1103/PhysRevA.87.042102 | Abstract: | It is shown that a general model for particle detection in combination with a linear application of the Wigner rotations, which correspond to momentum-dependent changes of the particle spin under Lorentz transformations, to the state of a massive relativistic particle in a superposition of two counterpropagating momentum states leads to a paradox. The paradox entails the instantaneous transmission of information between two spatially separated parties. A solution to the paradox is given when the physical construction of the corresponding state is taken into account, suggesting that we cannot in general linearly apply the Wigner rotations to a quantum state without considering the appropriate physical interpretation. © 2013 American Physical Society. | Source Title: | Physical Review A - Atomic, Molecular, and Optical Physics | URI: | http://scholarbank.nus.edu.sg/handle/10635/98587 | ISSN: | 10502947 | DOI: | 10.1103/PhysRevA.87.042102 |
Appears in Collections: | Staff Publications |
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