Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2010-06-29
JHEP 1104:036,2011
Physics
High Energy Physics
High Energy Physics - Theory
20+1 pages, 7 figures
Scientific paper
10.1007/JHEP04(2011)036
In recent years a very exciting and intense activity has been devoted to the understanding and construction of materials that enjoy exotic optical properties, such as a negative refractive index. Motivated by these experimental and theoretical developments, we use the string-inspired idea of holography to study the electromagnetic response of a certain class of media: strongly coupled relativistic systems that admit a dual gravitational description. Our results indicate that this type of media generally have a negative refractive index. Moreover we observe that a negative refractive index could be a common feature of relativistic hydrodynamic systems at low frequencies.
Amariti Antonio
Forcella Davide
Mariotti Alberto
Policastro Giuseppe
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