Tests of CPT and Lorentz Symmetry in Penning-Trap Experiments

Abstract

We find that the use of a general theoretical framework incorporating CPT and Lorentz breaking permits a detailed investigation of possible experimental signatures in Penning-trap experiments. Our results indicate that the sharpest tests of CPT symmetry emerge from comparisons of anomaly frequencies in g — 2 experiments. Our estimates of appropriate figures of merit provide bounds of approximately 1020 in electron-positron experiments and of 1023 for a plausible proton-antiproton experiment, Other signals involving possible diurnal variations provide additional bounds at the level of 1018 in the electron-positron system and 1021 in the proton-antiproton system. A table showing all our estimated bounds is presented in Ref. [10].