38 citations · 210 across the 27 of their papers we have counts for
8 papers · 1 filter
Particles with anomalous magnetic moment in external e.m. fields: the proper time formulation
A. Barducci, R. Giachetti, G. Pettini
In this paper we evaluate the expression for the Green function of a pseudo-classical spinning particle interacting with constant electromagnetic external fields by taking into acc…
Perturbation Theory for Metastable States of the Dirac Equation with Quadratic Vector Interaction
R. Giachetti, V. Grecchi
The spectral problem of the Dirac equation in an external quadratic vector potential is considered using the methods of the perturbation theory. The problem is singular and the per…
Foldy-Wouthuysen Transformation for a Spinning Particle with Anomalous Magnetic Moment
A. Barducci, R. Giachetti, G. Pettini
We study the Foldy-Wouthuysen transformation for a pseudoclassical particle with anomalous magnetic moment in an external, stationary electromagnetic field. We show that the transf…
States of the Dirac equation in confining potentials
R. Giachetti, E. Sorace
We study the Dirac equation in confining potentials with pure vector coupling, proving the existence of metastable states with longer and longer lifetimes as the non-relativistic l…
Spinning particle in an external linearized gravitational wave field
A. Barducci, R. Giachetti
We study the interaction of a scalar and a spinning particle with a coherent linearized gravitational wave field treated as a classical spin two external field. The spin degrees of…
Two fermion relativistic bound states
R. Giachetti, E. Sorace
We consider the relativistic quantum mechanics of a two interacting fermions system. We first present a covariant formulation of the kinematics of the problem and give a short outl…