Lensing effects in a nematic liquid crystal with topological defects.
Light traveling through a liquid crystal with disclinations perceives a geometrical background which causes lensing effects similar to the ones predicted for cosmic objects like global monopoles and cosmic strings. In this paper we explore the effective geometry as perceived by light in such media. The comparison between both systems suggests that experiments can be done in the laboratory to simulate optical properties, like gravitational lensing, of cosmic objects.
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Departamento de Fisica, Universidade Federal da Paraiba, Caixa Postal 5008, 58051-970, João Pessoa, PB, Brazil.
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D001709:Biotechnology; D003198:Computer Simulation; D003359:Cosmic Radiation; D004548:Elasticity; D006112:Gravitation; D007909:Lenses; D008027:Light; D050866:Liquid Crystals / Q000737:chemistry*; D008422:Materials Testing