Comment on "Global Positioning System Test of the Local Position Invariance of Planck's Constant"
arXiv:1203.5592 · doi:10.1103/PhysRevLett.109.068901
Abstract
In their Letter, Kentosh and Mohageg [Phys. Rev. Lett. 108, 110801 (2012)] seek to use data from clocks aboard global positioning system (GPS) satellites to place limits on local position invariance (LPI) violations of Planck's constant, h. It is the purpose of this comment to show that discussing limits on variation of dimensional constants (such as h) is not meaningful; that even within a correct framework it is not possible to extract limits on variation of fundamental constants from a single type of clock aboard GPS satellites; and to correct an important misconception in the authors' interpretation of previous Earth-based LPI experiments.
arXiv commentReply to article available here: arXiv:1203.0102
References in corpus (6)
- New Limits on Coupling of Fundamental Constants to Gravity Using Sr Optical Lattice Clocks
- Limits on the temporal variation of the fine structure constant, quark masses and strong interaction from quasar absorption spectra and atomic clock experiments
- Testing Local Lorentz and Position Invariance and Variation of Fundamental Constants by searching the Derivative of the Comparison Frequency Between a Cryogenic Sapphire Oscillator and Hydrogen Maser
- Investigation of the Gravitational Potential Dependence of the Fine-Structure Constant Using Atomic Dysprosium
- GPS test of the local position invariance of Planck's constant
- How changing physical constants and violation of local position invariance may occur?