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

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

1998-02-14

arxiv.org/abs/physics/9802029v1

Physics

Atomic Physics

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

Scientific paper

10.1103/PhysRevLett.82.888

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.

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