Browsing by Issue Date

Browsing by Issue Date

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  • Viscous self interacting dark matter cosmology for small redshift 
    Atreya, Abhishek; Bhatt, Jitesh R.; Mishra, Arvind (IOP Publishing, 2019-02)
    The viscosity of dark matter in cosmological models may cause an accelerated expansion and when this effect is sufficiently large, it can explain the dark energy. In this work, attributing the origin of viscosity to ...
  • Transport coefficients of hot magnetized QCD matter beyond the lowest Landau level approximation 
    Kurian, Manu; Mitra, Sukanya; Ghosh, Snigdha; Chandra, Vinod (Springer, 2019-02)
    In this article, shear viscosity, bulk viscosity, and thermal conductivity of a QCD medium have been studied in the presence of a strong magnetic field. To model the quark–gluon plasma, an extended quasi-particle description ...
  • Testing dark energy models in the light of σ8 tension 
    Lambiase, Gaetano; Mohanty, Subhendra; Narang, Ashish; Parashari, Priyank (Springer, 2019-02)
    It has been pointed out that there exists a tension in σ8−Ωm measurement between CMB and LSS observation. In this paper we show that σ8−Ωm observations can be used to test the dark energy theories. We study two models, (1) ...
  • Dynamic coupling at low reynolds number 
    Dey, Krishna Kanti (Wiley, 2019-02)
    Collective and emergent behaviors of active colloids provide useful insights into the statistical physics of out‐of‐equilibrium systems. Colloidal suspensions containing microscopic active swimmers have been intensively ...
  • Constraining the p-Mode–g-Mode Tidal Instability with GW170817 
    Sengupta, Anand (APS (American Physical Society), 2019-02)
    We analyze the impact of a proposed tidal instability coupling p modes and g modes within neutron stars on GW170817. This nonresonant instability transfers energy from the orbit of the binary to internal modes of the stars, ...

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