Advanced Photonics, Vol. 2, Issue 5, 056001 (2020)
Experimental observation of effective gravity and two-time physics in ferrofluid-based hyperbolic metamaterials
Vera N. Smolyaninova1, John Cartelli1, Bryan Augstein1, Stephanie Spickard1, Mary S. Devadas1, and Igor I. Smolyaninov2,*
- 1Towson University, Department of Physics Astronomy and Geosciences, Towson, Maryland, United States
- 2University of Maryland, Department of Electrical and Computer Engineering, College Park, Maryland, United States
Recently, it was predicted that extraordinary light waves in hyperbolic metamaterials may exhibit two-time physics behavior. We report experimental observation of this effect via investigation of gravity-like nonlinear optics of iron/cobalt-based ferrofluid hyperbolic metamaterials. In addition to conventional temporal coordinates, the spatial coordinate oriented along the optical axis of the metamaterial also exhibits timelike character, which leads to very unusual two-time physics behavior in these systems on small scales.
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