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- W1989109847 abstract "We consider the role of the velocity in Lorentz-violating fermionic quantum theory, especially emphasizing the nonrelativistic regime. Information about the velocity will be important for the kinematical analysis of scattering and other problems. Working within the minimal standard model extension, we derive new expressions for the velocity. We find that generic momentum and spin eigenstates may not have well-defined velocities. We also demonstrate how several different techniques may be used to shed light on different aspects of the problem. A relativistic operator analysis allows us to study the behavior of the Lorentz-violating Zitterbewegung. Alternatively, by studying the time evolution of Gaussian wave packets, we find that there are Lorentz-violating modifications to the wave packet spreading and the spin structure of the wave function." @default.
- W1989109847 created "2016-06-24" @default.
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- W1989109847 date "2005-06-22" @default.
- W1989109847 modified "2023-09-23" @default.
- W1989109847 title "Velocity in Lorentz-violating fermion theories" @default.
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- W1989109847 doi "https://doi.org/10.1103/physrevd.71.125015" @default.
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