Comments on "Gauge Fields and Unparticles"

Details Comments on "Gauge Fields and Unparticles" Comments on "Gauge Fields and Unparticles"

2008-02-03

arxiv.org/abs/0802.0313v2

Physics

High Energy Physics

High Energy Physics - Theory

7 pages, comment on arXiv:0801.0892; references added

Scientific paper

The derivation of Feynman rules for unparticles carrying standard model quantum numbers is discussed. In particular, this note demonstrates that an application of Mandelstam's approach to constructing a gauge-invariant action reproduces for unparticles the vertices one obtains through the usual minimal coupling scheme; other non-trivial requirements are satisfied as well. This approach is compared to an alternative method 0801.0892 that has recently been constructed by A. L. Licht.

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