Definition of the Dirac Sea in the Presence of External Fields

Felix Finster

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arXiv · hep-th/9705006

Definition of the Dirac Sea in the Presence of External Fields

Felix Finster

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Abstract

It is shown that the Dirac sea can be uniquely defined for the Dirac equation with general interaction, if we impose a causality condition on the Dirac sea. We derive an explicit formula for the Dirac sea in terms of a power series in the bosonic potentials. The construction is extended to systems of Dirac seas. If the system contains chiral fermions, the causality condition yields a restriction for the bosonic potentials.

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Felix Finster. 2009-01-06. Definition of the Dirac Sea in the Presence of External Fields. https://arxiv.org/abs/hep-th/9705006

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