S. Karshenboim - Laboratory search for a possible time variation of fundamental physical constants

by Savely Karshenboim (Max-Planck-Institut)

Pontecorvo room (LNGS)

Pontecorvo room


Frequency is the most accurately measured quantity and precision frequency measurements offers us an opportunity to look for a possible time variation of such fundamental constants as the fine structure constant alpha and the electron-to-proton mass ratio. Recent progress in the area improve constraints on time variation of alpha to the level of 10^{-16}. I shall review situation in astrophysical observations. In my talk I will consider also recent precision frequency measurements. To set a constraint on fundamental constants one has to understand how frequencies of atomic and molecular transitions depend on alpha, me/mp etc. This question will be also discussed in detail. Savely Karshenboim (Max-Planck-Institut, Garching & Pulkovo Observatory, Saint Petersburg) If available you can check seminar slides here on INDICO. Complete LNGS seminar list (including slides) is available at: