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Topological defects as inhomogeneous condensates in Quantum Field Theory: Kinks in (1+1) dimensional $\la ψ^4$ theory
Massimo Blasone, Petr Jizba
We study topological defects as inhomogeneous (localized) condensates of particles in Quantum Field Theory. In the framework of the Closed-Time-Path formalism, we consider explicit…
Comment on ``Remarks on flavor-neutrino propagators and oscillation formulae''
Massimo Blasone, Antonio Capolupo, Giuseppe Vitiello
We comment on the paper ``Remarks on flavor-neutrino propagators and oscillation formulae'' [Phys. Rev. D64, 013011 (2001)]. We show that the conclusions presented in that paper do…
Understanding flavor mixing in Quantum Field Theory
M. Blasone, A. Capolupo, G. Vitiello
We report on recent results showing that a rich non-perturbative vacuum structure is associated with flavor mixing in Quantum Field Theory. We treat explicitly the case of mixing a…
Bateman's dual system revisited: I. Quantization, geometric phase and relation with the ground-state energy of the linear harmonic oscillator
Massimo Blasone, Petr Jizba
By using the Feynman-Hibbs prescription for the evolution amplitude, we quantize the system of a damped harmonic oscillator coupled to its time-reversed image, known as Bateman's d…
Currents and charges for mixed fields
Massimo Blasone, Petr Jizba, Giuseppe Vitiello
We present an analysis of currents and charges for a system of two mixed fields, both for spinless bosons and for Dirac fermions. This allows us to obtain in a straightforward way…
Quantum Field Theory of boson mixing
Massimo Blasone, Antonio Capolupo, Oreste Romei +1
We consider the quantum field theoretical formulation of boson field mixing and obtain the exact oscillation formula. This formula does not depend on arbitrary mass parameters. We…