Negative-frequency modes in quantum field theory
| Autor: | Dickinson, Robert, Forshaw, Jeff, Millington, Peter |
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| Rok vydání: | 2015 |
| Předmět: | |
| Zdroj: | 2015 J. Phys.: Conf. Ser. 631 012059 |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1088/1742-6596/631/1/012059 |
| Popis: | We consider a departure from standard quantum field theory, constructed so as to permit momentum eigenstates of both positive and negative energy. The resulting theory is intriguing because it brings about the cancellation of leading ultra-violet divergences and the absence of a zero-point energy. The theory gives rise to tree-level source-to-source transition amplitudes that are manifestly causal and consistent with standard S-matrix elements. It also leads to the usual result for the oblique corrections to the standard electroweak theory. Remarkably, the latter agreement relies on the breakdown of naive perturbation theory due to resonance effects. It remains to be shown that there are no problems with perturbative unitarity. Comment: 15 pages. Prepared for the proceedings of DISCRETE2014: the Fourth Symposium on Prospects in the Physics of Discrete Symmetries, King's College London, to appear in the Journal of Physics: Conference Series (JPCS). Presented by P. Millington |
| Databáze: | arXiv |
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