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Analogue Models for T and CPT Violation in Neutral-Meson Oscillations
Alan Kostelecky, Agnes Roberts
Analogue models for CP violation in neutral-meson systems are studied in a general framework. No-go results are obtained for models in classical mechanics that are nondissipative o…
Stability, Causality, and Lorentz and CPT Violation
Alan Kostelecky, Ralf Lehnert
Stability and causality are investigated for quantum field theories incorporating Lorentz and CPT violation. Explicit calculations in the quadratic sector of a general renormalizab…
Analytical construction of a nonperturbative vacuum for the open bosonic string
Alan Kostelecky, Robertus Potting
Using analytical methods, a nonpertubative vacuum is constructed recursively in the field theory for the open bosonic string. Evidence suggests it corresponds to the Lorentz-invari…
Limit on Lorentz and CPT Violation of the Neutron Using a Two-Species Noble-Gas Maser
D. Bear, R. E. Stoner, R. L. Walsworth +2
A search for sidereal variations in the frequency difference between co-located 129-Xe and 3-He Zeeman masers sets the most stringent limit to date on leading-order Lorentz and CPT…
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…