Spectral Theory for a Mathematical Model of the Weak Interaction: The Decay of the Intermediate Vector Bosons W~(±), II

摘要

We do the spectral analysis of the Hamiltonian for the weak leptonic decay of the gauge bosons W~(±). Using Mourre theory, it is shown that the spectrum between the unique ground state and the first threshold is purely absolutely continuous. Neither sharp neutrino high-energy cutoff nor infrared regularization is assumed.