• Studying the cosmological apparent horizon with quasistatic coordinates

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/pram/080/02/0349-0354

    • Keywords

       

      Cosmological horizon; thermodynamics of gravity.

    • Abstract

       

      This article aims at a natural generalization of the static coordinates to the $(n + 1)$-dimensional Friedmann–Lemaître–Robertson–Walker (FLRW) Universe. After demonstrating a no-go theorem, we put forward the quasistatic coordinates for the FLRW Universe. Then, the quasistatic coordinates are utilized to study the unified first law and the scalar-type perturbations on the cosmological apparent horizon.

    • Author Affiliations

       

      Rui-Yan Yu1 Towe Wang2

      1. School of Information and Mathematics, Yangtze University, Jingzhou, HuBei 434023, China
      2. Department of Physics, East China Normal University, Shanghai 200241, China
    • Dates

       
  • Pramana – Journal of Physics | News

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      Posted on July 25, 2019

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