Causal phase in QED3
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Data
1997-07-01
Autores
Boldo, J. L. [UNESP]
Pimentel, B. M. [UNESP]
Tomazelli, J. L. [UNESP]
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The operator S in Fock space which describes the scattering and particle production processes in an external time-dependent electromagnetic potential A can be constructed from the one-particle S-matrix up to a physical phase λ[A]. In this work we determine this phase for QED in (2 + 1) dimensions by means of causality and show that no ultraviolet divergences arise, in contrast to the usual formalism of QED3.
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International Journal of Theoretical Physics, v. 36, n. 7, p. 1565-1574, 1997.