Antimatter-gravity couplings, and Lorentz symmetry

Abstract

Implications of possible CPT and Lorentz violation for antimattergravity experiments as well as other antimatter tests are considered in the context of the general field-theory-based framework of the Standard-Model Extension (SME).

Prospects for SME Tests with Experiments at SYRTE and LKB

“…) 00 for a test mass m T . Due to a change of the a w 0 sign for antimatter, free-fall LIV could still be large for antimatter while strongly constrained for normal matter, 5 as can be measured, e.g., in GBAR in the future (free fall of antihydrogen). 1 Deriving the equations of motion from the lagrangian by the Euler-Lagrange equations and expressing frame dependence with respect to a common inertial frame (the Sun-centered celestial equatorial frame) leads to the full LIV time variation model, which we can use to model the observables of gravimeters and WEP tests.…”