1998
DOI: 10.1103/physrevlett.81.1987
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Semiclassical Time Evolution and Trace Formula for Relativistic Spin-1/2 Particles

Abstract: We investigate the Dirac equation in the semiclassical limit → 0. A semiclassical propagator and a trace formula are derived and are shown to be determined by the classical orbits of a relativistic point particle. In addition, two phase factors enter, one of which can be calculated from the Thomas precession of a classical spin transported along the particle orbits. For the second factor we provide an interpretation in terms of dynamical and geometric phases.

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Cited by 73 publications
(105 citation statements)
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“…4.1), calculating the spin part of the path integral exactly. The trace formula we obtain is a generalization of the results by Bolte and Keppeler [5] to arbitrary spin. A similar approach leads, under certain restrictions, to the trace formula in the adiabatic (strong-coupling) limit (Sec.…”
Section: Semiclassics With Spin-orbit Couplingmentioning
confidence: 74%
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“…4.1), calculating the spin part of the path integral exactly. The trace formula we obtain is a generalization of the results by Bolte and Keppeler [5] to arbitrary spin. A similar approach leads, under certain restrictions, to the trace formula in the adiabatic (strong-coupling) limit (Sec.…”
Section: Semiclassics With Spin-orbit Couplingmentioning
confidence: 74%
“…For s = 1/2 the modulation factor M po (E) was derived in [5] by a different method, which, as ours, treats the spin degrees of freedom on the quantum-mechanical level.…”
Section: Weak-coupling Limit: Quantum-mechanical Treatment Of Spinmentioning
confidence: 99%
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