Descrizione

In " PHYSICAL REVIEW D ",Third Series, Vol. 10, N. 1, 1 july 1974, pp. 275-289, the entire issue in original printed wrappers. A good copy, Four-page library stamp. FIRST EDITION. " In physics, the Pati–Salam model is a Partial Unification Theory proposed in 1974 by nobel laureate Abdus Salam and Jogesh Pati. The unification is based on there being four quark color charges, dubbed red, green, blue and violet (or lilac), instead of the conventional three, with the new "violet" quark being identified with the leptons. The model also has Left–right symmetry and predicts the existence of a high energy right handed weak interaction with heavy W' and Z' bosons. Originally the fourth color was labelled "lilac" to alliterate with "lepton". Pati–Salam is a mainstream theory and a viable alternative to the Georgi–Glashow SU(5) unification. It can be embedded within an SO(10) unification model (as can SU(5). ( https://en.wikipedia.org/wiki/Pati%E2%80%93Salam_model ).