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Open Physics

formerly Central European Journal of Physics

Editor-in-Chief: Seidel, Sally

Managing Editor: Lesna-Szreter, Paulina

IMPACT FACTOR 2018: 1.005

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Volume 9, Issue 4


Volume 13 (2015)

Flowing liquid crystal simulating the Schwarzschild metric

Erms Pereira
  • Departamento de Física, CCEN, Universidade Federal da Paraíba, Cidade Universitária, 58051-900, João Pessoa, PB, Brazil
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/ Fernando Moraes
  • Departamento de Física, CCEN, Universidade Federal da Paraíba, Cidade Universitária, 58051-900, João Pessoa, PB, Brazil
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Published Online: 2011-04-30 | DOI: https://doi.org/10.2478/s11534-010-0109-6


We show how to simulate the equatorial section of the Schwarzschild metric through a flowing liquid crystal in its nematic phase. Inside a liquid crystal in the nematic phase, a traveling light ray feels an effective metric, whose properties are linked to perpendicular and parallel refractive indexes, n o and n e respectively, of the rod-like molecule of the liquid crystal. As these indexes depend on the scalar order parameter of the liquid crystal, the Beris-Edwards hydrodynamic theory is used to connect the order parameter with the velocity of a liquid crystal flow at each point. This way we calculate a radial velocity profile that simulates the equatorial section of the Schwarzschild metric, in the region outside of Schwarzschild’s radius, in the nematic phase of the liquid crystal. In our model, the higher flow velocity can be on the order of some meters per second.

Keywords: analogue models; black hole geometry; liquid crystal

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About the article

Published Online: 2011-04-30

Published in Print: 2011-08-01

Citation Information: Open Physics, Volume 9, Issue 4, Pages 1100–1105, ISSN (Online) 2391-5471, DOI: https://doi.org/10.2478/s11534-010-0109-6.

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© 2011 Versita Warsaw. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License. BY-NC-ND 3.0

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