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Abstract: (arXiv)
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.
Note:
  • 20+1 pages, 7 figures
  • Gauge-gravity correspondence
  • Electromagnetic Processes and Properties
  • Holography and quark-gluon plasmas
  • hydrodynamics: relativistic
  • strong coupling
  • holography
  • optics
  • refractive index