Penning-Trap Searches for Lorentz and CPT Violation

An overview of recent progress on testing Lorentz and CPT symmetry using Penning traps is presented. The theory of quantum electrodynamics with Lorentz-violating operators of mass dimensions up to six is summarized. Dominant shifts in the cyclotron and anomaly frequencies of the confined particles and antiparticles due to Lorentz and CPT violation are derived. Existing results of the comparisons of charge-to-mass ratios and magnetic moments involving protons, antiprotons, electrons, and positrons are used to constrain various coefficients for Lorentz violation.

Automated summary

Recent progress in testing Lorentz and CPT symmetry using Penning traps is summarized, including a review of quantum electrodynamics theory with Lorentz-violating operators up to mass dimensions of six. Dominant shifts in cyclotron and anomaly frequencies of confined particles and antiparticles due to Lorentz and CPT violation are derived. Results from comparisons of charge-to-mass ratios and magnetic moments of protons, antiprotons, electrons, and positrons are utilized to constrain various coefficients for Lorentz violation.