TL;DR
This paper reviews recent theoretical and experimental efforts to test Lorentz invariance, highlighting high-precision tests motivated by quantum gravity ideas and summarizing current constraints from terrestrial and astrophysical observations.
Contribution
It provides a comprehensive overview of theoretical frameworks and experimental progress in testing Lorentz invariance, including recent high-precision results.
Findings
Current constraints limit Lorentz violating effects
Advances in experimental techniques enable more precise tests
Astrophysical observations complement terrestrial experiments
Abstract
Motivated by ideas about quantum gravity, a tremendous amount of effort over the past decade has gone into testing Lorentz invariance in various regimes. This review summarizes both the theoretical frameworks for tests of Lorentz invariance and experimental advances that have made new high precision tests possible. The current constraints on Lorentz violating effects from both terrestrial experiments and astrophysical observations are presented.
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