Abstract
We consider Kasner space–time describing anisotropic three-dimensional expansion of RHIC and LHC fireball and study the generalisation of Bjorken’s one-dimensional expansion by taking into account second-order relativistic viscous hydrodynamics. Using time-dependent AdS/CFT correspondence, we study the late-time behaviour of the Bjorken flow. From the conditions of conformal invariance and energy–momentum conservation, we obtain the explicit expression for the energy density as a function of proper time in terms of Kasner parameters. The proper time dependence of the temperature and entropy have also been obtained in terms of Kasner parameters. We consider Eddington–Finkelstein-type coordinates and discuss the gravity dual of the anisotropically expanding fluid in the late-time regime.
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Acknowledgements
The authors would like to thank S Bhattacharyya for useful discussion. SM would like to thank ICTS-TIFR for hospitality under the associateship programme where a part of this work had been done. Work of PPP was supported in part by UGC-BRS fellowship, Government of India.
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Pruseth, P.P., Mahapatra, S. Anisotropic expansion, second-order hydrodynamics and holographic dual. Pramana - J Phys 95, 105 (2021). https://doi.org/10.1007/s12043-021-02133-w
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DOI: https://doi.org/10.1007/s12043-021-02133-w