Evolving Horava cosmological horizons

  • Several sets of radially propagating null congruence generators are exploited in order to form 3-dimensional marginally trapped surfaces, referred to as black hole and cosmological apparent horizons in a Hořava universe. Based on this method, we deal with the characteristics of the 2-dimensional space-like spheres of symmetry and the peculiarities of having trapping horizons. Moreover, we apply this method in standard expanding and contracting FLRW cosmological models of a Hořava universe to investigate the conditions under which the extra parameters of the theory may lead to trapped/anti-trapped surfaces both in the future and in the past. We also include the cases of negative time, referred to as the finite past, and discuss the formation of anti-trapped surfaces inside the cosmological apparent horizons.
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Mohsen Fathi and Morteza Mohseni. Evolving Horava cosmological horizons[J]. Chinese Physics C, 2016, 40(9): 095101. doi: 10.1088/1674-1137/40/9/095101
Mohsen Fathi and Morteza Mohseni. Evolving Horava cosmological horizons[J]. Chinese Physics C, 2016, 40(9): 095101.  doi: 10.1088/1674-1137/40/9/095101 shu
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Evolving Horava cosmological horizons

    Corresponding author: Mohsen Fathi,
    Corresponding author: Morteza Mohseni,
  • 1. Department of Physics, Payame Noor University (PNU), P. O. Box 19395-3697 Tehran, I. R. of Iran

Abstract: Several sets of radially propagating null congruence generators are exploited in order to form 3-dimensional marginally trapped surfaces, referred to as black hole and cosmological apparent horizons in a Hořava universe. Based on this method, we deal with the characteristics of the 2-dimensional space-like spheres of symmetry and the peculiarities of having trapping horizons. Moreover, we apply this method in standard expanding and contracting FLRW cosmological models of a Hořava universe to investigate the conditions under which the extra parameters of the theory may lead to trapped/anti-trapped surfaces both in the future and in the past. We also include the cases of negative time, referred to as the finite past, and discuss the formation of anti-trapped surfaces inside the cosmological apparent horizons.

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