Space-Time Variation of Physical Constants and Relativistic Corrections in Atoms

Abstract

Detection of high-redshift absorption in the optical spectra of quasars have provided a powerful tool to measure spatial and temporal variations of physical ``constants'' in the Universe. It is demonstrated that high sensitivity to the variation of the fine structure constant alpha can be obtained from a comparison of the spectra of heavy and light atoms (or molecules). We have performed calculations for the pair FeII and MgII for which accurate quasar and laboratory spectra are available. A possibility of $10^5$ times enhanced effects of the fundamental constants variation suitable for laboratory measurements is also discussed.

8 pages; LaTeX; Submitted to Phys. Rev. Lett

References in corpus (2)

• A Search for Time Variation of the Fine Structure Constant
• New Limits on the Possible Variation of Physical Constants

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