“…In this sense the Stueckelberg field restores the gauge symmetry which had been broken by the mass term (Ruegg &,Ruiz-Altaba 2004), (Körs & Nath 2004, (Feldman, Körs & Nath 2007), (Cheung & Yuan 2007), (Zhang, Wang, & Wang 2008). Under dual transformation W µ transforms according to (31) and σ as…”