Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2002-10-22
Phys.Rev. D67 (2003) 025014
Physics
High Energy Physics
High Energy Physics - Theory
16 pages, no figures, prepared with ReVTeX4
Scientific paper
10.1103/PhysRevD.67.025014
For semisimple groups, possibly multiplied by U(1)'s, the number of Yang-Mills gauge fields is equal to the number of generators of the group. In this paper, it is shown that, for non-semisimple groups, the number of Yang-Mills fields can be larger. These additional Yang-Mills fields are not irrelevant because they appear in the gauge transformations of the original Yang-Mills fields. Such non-semisimple Yang-Mills theories may lead to physical consequences worth studying. The non-semisimple group with only two generators that do not commute is studied in detail.
Nuyts Jean
Wu Tai Tsun
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