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16 February 2025
 
  » arxiv » astro-ph/0412120

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Weak lensing in scalar-tensor theories of gravity
Carlo Schimd ; Jean-Philippe Uzan ; Alain Riazuelo ;
Date 6 Dec 2004
Journal Phys.Rev. D71 (2005) 083512
Subject astro-ph
AffiliationIAP & Univ. Parma - INFN Parma), Jean-Philippe Uzan (LPT Orsay & IAP), Alain Riazuelo (IAP
AbstractThis article investigates the signatures of various models of dark energy on weak gravitational lensing, including the complementarity of the linear and non-linear regimes. It investigates quintessence models and their extension to scalar-tensor gravity. The various effects induced by this simplest extension of general relativity are discussed. It is shown that, given the constraints in the Solar System, models such as a quadratic nonminimal coupling do not leave any signatures that can be detected while other models, such as a runaway dilaton, which include attraction toward general relativity can let an imprint of about 10%.
Source arXiv, astro-ph/0412120
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