Volume 80, Number 4, November 2007
|Number of page(s)||6|
|Section||Condensed Matter: Structural, Mechanical and Thermal Properties|
|Published online||23 October 2007|
Aharonov-Bohm–like effect for light propagating in nematics with disclinations
Departamento de Física, Universidade Estadual de Feira de Santana - BR116-Norte, Km 3, 44031-460, Feira de Santana, BA, Brazil
2 Departamento de Física, CCEN, Universidade Federal da Paraíba - Caixa Postal 5008, 58051-970 João Pessoa, PB, Brazil
Accepted: 20 September 2007
Using a geometric approach for the propagation of light in anisotropic media, we investigate what effect the director field of disclinations may have on the polarization state of light. Parallel transport around the defect, of the spinor describing the polarization, indicates the acquisition of a topological phase, in analogy with the Aharonov-Bohm effect.
PACS: 61.30.Jf – Defects in liquid crystals / 42.70.Df – Liquid crystals / 03.65.Vf – Phases: geometric; dynamic or topological
© Europhysics Letters Association, 2007
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