Nonrelativistic fermions in magnetic field: a quantum field theory approach

Walter Greiner, J. Reinhardt

K. W. Kehr

김상준

Ruhi Shah, Eduardo Martín-Martínez, Tales Rick Perche

We analyze how nonrelativistic effective models for the magnetic coupling of a spin to the electromagnetic field (proportional to $\stackrel{^}{\mathbit{\ensuremath{\sigma}}}\ifmmode\cdot\else\textperiodcentered\fi{}\mathbit{B}$) emerge from a full quantum field theoretical description of charged fermionic fields with the quantum electromagnetic field. This allows us to keep track of relativistic corrections to the models commonly used in experimental spin physics. We discuss how this interaction compares to the usual simplified models used in relativistic quantum information.

Ikuo Ichinose, Tetsuo Matsui

Mark Bolsterli

It is shown that the fermion quasiparticle in many nonrelativistic quantum field theories has a maximum velocity.Received 25 May 1989DOI:https://doi.org/10.1103/PhysRevA.40.5455©1989 American Physical Society