Gravity Effects on Antimatter in the Standard-Model Extension

TL;DR

This paper reviews how the Standard-Model Extension framework can be used to analyze potential violations of Lorentz and CPT symmetry in antimatter gravity, discussing implications and limits from various experiments.

Contribution

It provides a comprehensive summary of how SME models can be applied to study antimatter gravity and the constraints from existing experiments.

Findings

SME framework links Lorentz and CPT violation to antimatter gravity effects

Various experimental limits constrain anomalous antimatter gravitational behavior

Theoretical models suggest possible deviations from standard gravity in antimatter

Abstract

The gravitational Standard-Model Extension (SME) is the general field-theory based framework for the analysis of CPT and Lorentz violation. In this work we summarize the implications of Lorentz and CPT violation for antimatter gravity in the context of the SME. Implications of various attempts to place indirect limits on anomalous antimatter gravity are considered in the context of SME-based models.