Haag's Theorem as a Reason to Reconsider Direct-Action Theories

R. E. Kastner

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arXiv · 1502.03814

Haag's Theorem as a Reason to Reconsider Direct-Action Theories

R. E. Kastner

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Abstract

It is argued that the severe consequences of Haag's inconsistency theorem for relativistic quantum field theories can be successfully evaded in the direct-action approach. Some recent favorable comments of John Wheeler, often mistakenly presumed to have abandoned his own (and Feynman's) direct-action theory, together with the remarkable immunity of direct-action quantum electrodynamics to Haag's theorem, suggest that it may well be a good time to rehabilitate direct action theories. It is also noted that, as extra dividends, direct-action QED is immune to the self-energy problem of standard gauge field QED, and can also provide a solution to the problem of gauge arbitrariness.

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R. E. Kastner. 2015-02-12. Haag's Theorem as a Reason to Reconsider Direct-Action Theories. https://arxiv.org/abs/1502.03814

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