The European Physical Journal C

, 73:2562 | Cite as

Deviation from ΛCDM with cosmic strings networks

Regular Article - Theoretical Physics

Abstract

In this work, we consider a network of cosmic strings to explain a possible deviation from ΛCDM behaviour. We use different observational data to constrain the model and show that a small but non-zero contribution from the string network is allowed by the observational data, which can result in a reasonable departure from ΛCDM evolution. But by calculating the Bayesian evidence, we show that the present data still strongly favour the concordance ΛCDM model irrespective of the choice of the prior.

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Copyright information

© Springer-Verlag Berlin Heidelberg and Società Italiana di Fisica 2013

Authors and Affiliations

  1. 1.Centre for Theoretical PhysicsJamia Millia IslamiaNew DelhiIndia
  2. 2.Harish-Chandra Research InstituteJhunsiIndia

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