Search for a possible variation of the fine structure constant

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Search for Possible Variation of the Fine Structure Constant

Determination of the fine structure constant α and search for its possible variation are considered. We focus on a role of the fine structure constant in modern physics and discuss precision tests of quantum electrodynamics. Different methods of a search for possible variations of fundamental constants are compared and those related to optical measurements are considered in detail.

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Fine Structure Anomalies and Search for Variation of the Fine Structure Constant in Laboratory Experiments

Configuration interaction in many-electron atoms may cause anomalies in the fine structure which make the intervals small and very sensitive to variation of the fine structure constant. Repeated precision measurements of these intervals over long period of time can put strong constrain on possible time variation of the fine structure constant. We consider the 5p 3P2,1,0 fine structure multiplet...

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Relativistic effects in Ni II and the search for variation of the fine structure constant

Theories unifying gravity and other interactions suggest the possibility of spatial and temporal variation of physical “constants” in the Universe. Detection of high redshift absorption systems intersecting the sight lines towards distant quasars provide a powerful tool for measuring these variations. In the present paper we demonstrate that high sensitivity to variation of the fine structure c...

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0 Relativistic effects in Ni II and the search for variation of the fine structure constant

Theories unifying gravity and other interactions suggest the possibility of spatial and temporal variation of physical “constants” in the Universe. Detection of high redshift absorption systems intersecting the sight lines towards distant quasars provide a powerful tool for measuring these variations. In the present paper we demonstrate that high sensitivity to variation of the fine structure c...

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Indications of a spatial variation of the fine structure constant.

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ژورنال

عنوان ژورنال: General Relativity and Gravitation

سال: 2006

ISSN: 0001-7701,1572-9532

DOI: 10.1007/s10714-005-0215-8