International Journal of Theoretical Physics

, Volume 48, Issue 8, pp 2340–2352 | Cite as

Why Pair Production Cures Covariance in the Light-Front?

Article
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Abstract

We show that the light-front vacuum is not trivial, and the Fock space for positive energy quanta solutions is not complete. As an example of this non triviality we have calculated the electromagnetic current for scalar bosons in the background field method were the covariance is restored through considering the complete Fock space of solutions.

In this work we construct the electromagnetic current operator for a system composed of two free bosons. The technique employed to deduce these operators is through the definition of global propagators in the light front when a background electromagnetic field acts on one of the particles.

Keywords

Light-front electromagnetic current Covariance Pair production 
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Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  1. 1.Fundação de Ensino e Pesquisa de ItajubáItajubáBrazil
  2. 2.Instituto de Fisica TeoricaUNESPSao PauloBrazil

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