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SYFC: Symposium Variations of Fundamental Constants: Theory and Experiment

SYFC 2: Variations of Fundamental Constants II

SYFC 2.3: Vortrag

Montag, 8. März 2010, 17:30–17:45, A 001

Variability of the proton-to-electron mass ratio on cosmological scales - quantification and handling of systematics — •Martin Wendt — Hamburger Sternwarte, Germany

Cosmology contributes a good deal to the investigation of variation of fundamental physical constants. High resolution data is available and allows for detailed analysis over cosmological distances and a multitude of methods were developed. The raised demand for precision requires a deep understanding of the limiting errors involved. The achievable accuracy is under debate and current observing proposals max out the capabilities of todays technology. The question for self-consistency in data analysis and effective techniques to handle unknown systematic errors is of increasing importance. Evidently systematics are not yet under control or fully understood since findings by different groups are partially in disagreement witch each other . We try to emphasize the importance to take these errors, namely i.e. calibration issues, into account and put forward some measures adapted to the problem.