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Tests of Lorentz symmetry using antihydrogen
Neil Russell
Signals of CPT and Lorentz violation are possible in the context of spectroscopy using hydrogen and antihydrogen. We apply the Standard-Model Extension, a broad framework for Loren…
The Standard-Model Extension and Tests of Relativity
Neil Russell
The Standard-Model Extension, or SME, is a general framework for the study of Lorentz violation in physics. A broad variety of experiments is able to access the SME coefficient spa…
Investigating Lorentz and CPT Symmetry with Antihydrogen
Neil Russell
This talk discusses theoretical aspects of tests of CPT and Lorentz Symmetry that will in principle be possible with trapped antihydrogen. The framework is the standard-model exten…
Space-Based Searches for Lorentz and CPT Violation
Neil Russell
In this proceedings, a summary is presented of recent research investigating ways in which high-precision atomic clocks on the International Space Station could search for violatio…
Tests of Spacetime Symmetry with Particle Traps
Neil Russell
Lorentz and CPT symmetry have been tested at high precision in numerous experiments. A general theoretical framework incorporating possible Lorentz and CPT violation in an extensio…
Searching for Lorentz Violation in the Ground State of Hydrogen
Robert Bluhm, V. Alan Kostelecky, Neil Russell
A theoretical analysis is made of experiments in hydrogen and antihydrogen that test CPT. We show that these experiments also provide sensitive tests of Lorentz symmetry for proton…