# Constraints on variations of m$_\mathrm{p}$/m$_\mathrm{e}$ based on UVES observations of H$_2$

@article{Wendt2013ConstraintsOV, title={Constraints on variations of m\$_\mathrm\{p\}\$/m\$_\mathrm\{e\}\$ based on UVES observations of H\$_2\$}, author={M. Wendt}, journal={arXiv: Cosmology and Nongalactic Astrophysics}, year={2013} }

This article summarizes the latest results on the proton-to-electron mass ratio $\mu$ derived from H$_2$ observations at high redshift in the light of possible variations of fundamental physical constants.
The focus lies on UVES observations of the past years as enormous progress was achieved since the first positive results on $\Delta\mu/\mu$ were published. With the better understanding of systematics, dedicated observation runs, and numerous approaches to improve wavelength calibration… CONTINUE READING

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