• Density contrast indicators in cosmological dust models

    • Fulltext


        Click here to view fulltext PDF

      Permanent link:

    • Abstract


      We discuss ways of quantifying structuration in relativistic cosmological settings, by employing a family of covariant density constrast indicators. We study the evolution of these indicators with time in the context of inhomogeneous Szekeres models. We find that different observers (having either different spatial locations or different indicators) see different evolutions for the density contrast, which may or may not be monotonically increasing with time. We also find that monotonicity seems to be related to the initial conditions of the model, which may be of potential interest in connection with debates regarding gravitational entropy and the arrow of time.

    • Author Affiliations


      Filipe C Mena1 Reza Tavakol1

      1. Astronomy Unit, School of Mathematical Sciences, Queen Mary and Westfield College, Mile End Road, London - E1 4NS, UK
    • Dates

  • Pramana – Journal of Physics | News

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

© 2021-2022 Indian Academy of Sciences, Bengaluru.