Giovanni Jona-Lasinio and Yoichiro Nambu proposed a dynamical model of particle mass inspired by superconductivity. A nonlinear four-fermion interaction produces a self-consistent massive fermionic state, analogous to the gap in a superconductor. The model also produces a massless pseudoscalar bound state in its symmetry limit, interpreted as an idealized pion. It demonstrates how both a massive constituent-like excitation and a light collective mode can arise from one interacting theory.[ref]
Dynamical Model of Elementary Particles Based on an Analogy with Superconductivity. I by Yoichiro Nambu and Giovanni Jona-Lasinio. 1961 abstract: self-energy, generalized Hartree-Fock treatment and idealized massless pion
A physicist working in mathematical physics.[ref]
Professional profile of Giovanni Jona-Lasinio. Independent professional identity
Portrait of Giovanni Jona-Lasinio
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Giovanni Jona-Lasinio is an Italian physicist known for his contributions to statistical mechanics, quantum field theory, and the foundations of statistical physics. He has been involved in various research projects and has published numerous papers in these fields.