Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2000-09-07
Found.Phys.Lett. 16 (2003) 135-141
Physics
High Energy Physics
High Energy Physics - Theory
LaTeX, 5 pages, 1 figure. v4: final version accepted for publication in Found. Phys. Lett
Scientific paper
Motivated by recent works on the origin of inertial mass, we revisit the relationship between the mass of charged particles and zero-point electromagnetic fields. To this end we first introduce a simple model comprising a scalar field coupled to stochastic or thermal electromagnetic fields. Then we check if it is possible to start from a zero bare mass in the renormalization process and express the finite physical mass in terms of a cut-off. In scalar QED this is indeed possible, except for the problem that all conceivable cut-offs correspond to very large masses. For spin-1/2 particles (QED with fermions) the relation between bare mass and renormalized mass is compatible with the observed electron mass and with a finite cut-off, but only if the bare mass is not zero; for any value of the cut-off the radiative correction is very small.
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