Year: 1994
Type: article
Abstract: We investigate the structure of the most general actions with the symmetry group G, spontaneously broken down to a subgroup H. We show that the only possible terms in the Lagrangian density that, although not G invariant, yield G-invariant terms in the action, are in one to one correspondence with the generators of the fifth cohomology classes. For the special case of G=SU(N${)}_{\mathit{L}}$\ifmmode\times\else\texttimes\fi{}SU(N${)}_{\mathit{R}}$ broken down to the diagonal subgroup H=SU(N${)}_{\mathit{V}}$, there is just one such term for N\ensuremath{\ge}3, which for N=3 is the original Wess-Zumino-Witten term.
Authors: Eric D’Hoker, Steven Weinberg
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2071721917