Eight-component two-fermion equations
High Energy Physics - Phenomenology
2009-10-31 v1 Atomic Physics
Abstract
An eight-component formalism is proposed for the relativistic two-fermion problem. In QED, it extends the applicability of the Dirac equation with hyperfine interaction to the positronium case. The use of exact relativistic two-body kinematics entails a CP-invariant spectrum which is symmetric in the total cms energy. It allows the extension of recent \alpha^6 recoil corrections to the positronium case, and implies new recoil corrections to the fine and hyperfine structures and to the Bethe logarithm.
Cite
@article{arxiv.hep-ph/9802233,
title = {Eight-component two-fermion equations},
author = {Ruth Haeckl and Viktor Hund and Hartmut Pilkuhn},
journal= {arXiv preprint arXiv:hep-ph/9802233},
year = {2009}
}
Comments
Revtex, accepted for publication in Phys. Rev. A