𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Mass and Spin Renormalization in Lorentz Electrodynamics

✍ Scribed by Walter Appel; Michael K.-H. Kiessling


Publisher
Elsevier Science
Year
2001
Tongue
English
Weight
307 KB
Volume
289
Category
Article
ISSN
0003-4916

No coin nor oath required. For personal study only.

✦ Synopsis


Lorentz' objection to the Uhlenbeck-Goudsmit proposal of a spin magnetic moment of the electron, namely that the electron's equatorial rotation speed would exceed the speed of light by a factor β‰ˆ10, mutated into an objection against Lorentz electrodynamics (LED) itself when the spin magnetic moment became established. However, Lorentz' renormalization calculation, based on the early 20th century's notion of a purely electromagnetic electron, does not qualify as proper from a modern perspective. This paper shows that renormalization treated properly does lead to a mathematically consistent and physically viable LED. A new, relativistically covariant massive LED is presented in which the bare particle has a finite positive bare rest mass and moment of inertia. The particle's electromagnetic self-interaction renormalizes its mass and spin. Most crucially, the renormalized particle is a soliton: after any scattering process its rest mass and spin magnitude are dynamically restored to their pre-scattering values. This guarantees that "an electron remains an electron," poetically speaking. A renormalization flow study of the limit of vanishing bare rest mass is conducted for this model. This limit yields a purely electromagnetic classical field theory with ultra-violet cutoff at about the electron's Compton wavelength! The renormalized limit model matches the empirical electron data as orderly as one can hope for at the level of Lorentz theory. In particular, no superluminal equatorial speeds occur.


πŸ“œ SIMILAR VOLUMES


Spin waves and renormalized magnetizatio
✍ M.A.N. AraΓΊjo; N.M.R. Peres πŸ“‚ Article πŸ“… 2005 πŸ› Elsevier Science 🌐 English βš– 173 KB

We discuss the magnetic properties of the Hubbard model in honeycomb lattice layers. A ground state magnetic phase diagram is obtained as a function of interaction, U, and electron density, n. We also calculate the spin wave excitations in the antiferromagnetic insulating phase of single-and double-