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Article overview
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Quantum field theory treatment of magnetic effects on the spin and orbital angular momentum of a free electron | | P. Kurian
; C. Verzegnassi
; | | Date: |
1 Aug 2015 | | Abstract: | We consider in a quantum field theory framework the effects of a classical
magnetic field on the spin and orbital angular momentum (OAM) of a free
electron. We derive formulae for the changes in the spin and OAM due to the
introduction of a general classical background field. We consider then a
constant magnetic field, in which case the relevant expressions of the effects
become much simpler and conversions between spin and OAM become readily
apparent. An estimate of the expectation values for a realistic electron state
is also given. Our findings may be of interest to researchers in spintronics
and the field of quantum biology, where electron spin has been implicated on
macroscopic time and energy scales. | | Source: | arXiv, 1508.0558 | | Services: | Forum | Review | PDF | Favorites | |
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