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- Causal phase in QED3
- Universidade Estadual Paulista (UNESP)
- 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.
- International Journal of Theoretical Physics, v. 36, n. 7, p. 1565-1574, 1997.
- Acesso restrito
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