Atomic optical clocks and search for variation of the fine-structure constant
نویسندگان
چکیده
منابع مشابه
A ug 1 99 9 Atomic optical clocks and search for variation of the fine structure constant
Atomic optical clocks and search for variation of the fine structure constant. Abstract Theories unifying gravity and other interactions suggest the possibility of spatial and temporal variation of physical " constants ". Accuracy achieved for the atomic optical frequency standards (optical clocks) approaches the level when possible time evolution of the fine structure constant α can be studied...
متن کاملAtomic optical clocks and search for variation of the fine structure
Theories unifying gravity and other interactions suggest the possibility of spatial and temporal variation of physical “constants”. Accuracy achieved for the atomic optical frequency standards (optical clocks) approaches the level when possible time evolution of the fine structure constant α can be studied by comparisons of rates between clocks based on different atomic transitions in different...
متن کامل2 8 Ju l 2 00 4 Atomic Clocks and the Search for Variation of the Fine Structure Constant
Evidence that the fine structure constant, α = e 2 /¯ hc, was different in an early epoch has recently been found in quasar (QSO) absorption spectra. An accurate laboratory measurement of α variation could help to distinguish between space and time variation of α and possibly confirm the QSO results. We have performed calculations of the relativistic energy shifts that a variation of α would ca...
متن کاملSearch 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.
متن کاملFine 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...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review A
سال: 2000
ISSN: 1050-2947,1094-1622
DOI: 10.1103/physreva.61.034502