8 papers
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…
Bounding CPT- and Lorentz-Violating Parameters in a Standard-Model Extension
Neil Russell
A general theoretical framework that incorporates possible CPT and Lorentz violation in an extension of the standard model and in quantum electrodynamics has been developed over th…
CPT and Lorentz Symmetry in Hydrogen and Antihydrogen
Neil Russell
Possibilities for observing signals of CPT and Lorentz violation in the spectroscopy of hydrogen and antihydrogen are considered. We show that transitions between the c and d hyper…