Capri, A. Z. ; Roy, S. M. (1992) A causal, Lorentz covariant and gauge invariant vacuum for a Dirac field in the presence of an external electromagnetic field Modern Physics Letters A, 7 (9). pp. 793-800. ISSN 0217-7323
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Official URL: http://www.worldscinet.com/mpla/07/0709/S021773239...
Related URL: http://dx.doi.org/10.1142/S021773239200077X
Abstract
We show how to construct, for a Dirac field coupled to time-dependent external electromagnetic field, an instantaneous causal vacuum that depends only on the (planar) hypersurface of instantaneity and is independent of coordinates and gauges. The instantaneous particle states are then defined covariantly and connected to states defined with respect to other hypersurfaces of instantaneity by Bogoliubov transformations.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to World Scientific Publishing Company. |
| ID Code: | 42890 |
| Deposited On: | 08 Jun 2011 05:21 |
| Last Modified: | 08 Jun 2011 12:43 |
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