An alternative interpretation of the Weinberg-Salam model

A problem of mass generation in the Unified EM+W theory is discussed. Two hypothetical possibilities for the nature of Higgs field are proposed.Comment: Talk at the conference "New Trends in High Energy Physics", Yalta, Crimea, Sept.27-Oct.4 2008; v2: added address, one formula and several misprints were correcte

Knots as possible excitations of the quantum Yang-Mills fields

A hypothetical picture of massive excitations of 4-dimensional Yang-Mills quantum field theory as closed knotted fat strings is described.Comment: Talk on the conference, dedicated to 85 years celebration for Professor C.N.Yan