S. Albeverio et B. Torresani, SOME REMARKS ON REPRESENTATIONS OF JET GROUPS AND GAUGE GROUPS, Journal of mathematical physics, 35(9), 1994, pp. 4897-4908
Irreducible unitary representations of the three first jet (or Leibniz
) extensions G(m)(k) of a compact group G are studied, focusing on the
neighborhood of the trivial representation. Some associated irreducib
le unitary (continuous tenser product) representations of the gauge (o
r current) groups of mappings from a Riemannian manifold into G(m)(k)
are described.