Observables in theories with a varying fine structure constant

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• 作者：A. Hees (1)
  O. Minazzoli (2) (3)
  J. Larena (1)
  
  1. Department of Mathematics ; Rhodes University ; Grahamstown ; 6140 ; South Africa
  2. Centre Scientifique de Monaco ; 8 Quai Antoine Ier ; 98000 ; Monaco ; Monaco
  3. UMR Artemis ; Observatoire de la C么te d鈥橝zur ; Universit茅 de Nice-Sophia Antipolis ; Boulevard de l鈥橭bservatoire ; CS 34229 ; 06304 ; Nice ; France
  
• 关键词：Fine structure constant variation ; CMB temperature ; Scalar鈥搕ensor theories ; Non ; minimal coupling ; BSBM theory ; Dilaton
• 刊名：General Relativity and Gravitation
• 出版年：2015
• 出版时间：February 2015
• 年：2015
• 卷：47
• 期：2
• 全文大小：197 KB
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• 刊物类别：Physics and Astronomy
• 刊物主题：Physics
  Mathematical and Computational Physics
  Relativity and Cosmology
  Differential Geometry
  Quantum Physics
  Astronomy, Astrophysics and Cosmology
  
• 出版者：Springer Netherlands
• ISSN：1572-9532

文摘

We show how two seemingly different theories with a scalar multiplicative coupling to electrodynamics are actually two equivalent parametrisations of the same theory: despite some differences in the interpretation of some phenomenological aspects of the parametrisations, they lead to the same physical observables. This is illustrated on the interpretation of observations of the cosmic microwave background.