4 papers
Testing Lorentz and CPT symmetry with hydrogen masers
M. A. Humphrey, D. F. Phillips, E. M. Mattison +3
We present details from a recent test of Lorentz and CPT symmetry using hydrogen masers. We have placed a new limit on Lorentz and CPT violation of the proton in terms of a recent…
Limit on Lorentz and CPT Violation of the Proton Using a Hydrogen Maser
D. F. Phillips, M. A. Humphrey, E. M. Mattison +3
We present a new measurement constraining Lorentz and CPT violation of the proton using a hydrogen maser double resonance technique. A search for hydrogen Zeeman frequency variatio…
New Clock Comparison Searches for Lorentz and CPT Violation
Ronald L. Walsworth, David Bear, Marc Humphrey +4
We present two new measurements constraining Lorentz and CPT violation using the Xe-129 / He-3 Zeeman maser and atomic hydrogen masers. Experimental investigations of Lorentz and C…
Double resonance frequency shift in a hydrogen maser
M. A. Humphrey, D. F. Phillips, R. L. Walsworth
We use the dressed atom formalism to calculate the frequency shift in a hydrogen maser induced by applied radiation near the Zeeman frequency, and find excellent agreement with a p…