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Distance-duality in theories with a nonminimal coupling to gravity

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 نشر من قبل Rui Pedro Lopes de Azevedo
 تاريخ النشر 2021
  مجال البحث فيزياء
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We show that gravitational theories with a nonminimal coupling (NMC) to the matter fields lead to a violation of Etheringtons distance-duality relation, which relates the luminosity and angular diameter distances. We derive constraints on power-law and exponential NMC models using existing measurements of type Ia supernovae and baryon acoustic oscillations throughout the redshift range $0<z<1.5$. These complement previous constrains derived from cosmic-microwave background radiation and big-bang nucleosynthesis data.



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