On the non-relativistic limit of charge conjugation in QED

Abstract

Even if at the level of the non-relativistic limit of full QED, C is not a symmetry, the limit of this operation does exist for the particular case when the electromagnetic field is considered a classical external object coupled to the Dirac field. This result extends the one obtained when fermions are described by the Schroedinger-Pauli equation. We give the expressions for both the C matrix and the $\hat{C}$ operator for galilean electrons and positrons interacting with the external electromagnetic field. The result is relevant in relation to recent experiments with antihydrogen.

7 pages

References in corpus (3)

• PT-Symmetric Quantum Electrodynamics
• Remark on charge conjugation in the non relativistic limit
• Charge Conjugation in the Galilean Limit