Old Journal Club: ‘Particle Spectrum in Quantum Field Theory’
Blue Room Instituto de Física Teórica (IFT) - C. Nicolás Cabrera, 13-15, Fuencarral-El Pardo, Madrid, SpainAlejandro Puga (IFT) will present "Particle Spectrum in Quantum Field Theory" de Alexander M. Polyakov (JETP Lett. 20 (1974) 194-195) Abstract: We investigate the nonperturbative structure of quantum field theories and its consequences for the physical spectrum of excitations. Emphasis is placed on the role of instantons—topologically nontrivial field configurations—which contribute essentially to tunneling processes and […]