Conveners
Plenary session I
- Marek Biesiada (University of Silesia)
Plenary session I
- Marek Biesiada (University of Silesia)
Fundamental constants play a central role in the laws of physics. Any detection of the variation of these constant would signal a violation of the Einstein equivalence principle, and thus the need to go beyond general relativity. After recalling the links between fundamental constants and theories of gravity, I will focus on recent developments to constrain their time variation, mostly...
Varying constants theories in several guises may be essential for the resolution of a number of impasses in cosmology and quantum gravity. Perhaps the most radical of them all – varying c theories – may be the clue to extracting phenomenology from quantum gravity theories, finally rendering the field properly a branch of science. I will review this possibility, with particular emphasis on the...
The precision of atomic clocks improves at a rapid pace: While caesium clocks now reach relative uncertainties of a few $10^{-16}$, several optical clocks based on different atoms and ions are now reported with systematic uncertainties in the low $10^{-18}$ range [1]. The Yb$^+$ optical clock at PTB has recently reached this uncertainty [2], following Hans Dehmelt’s seminal ideas of using ...
