AI Article Synopsis
- A new model demonstrates that light can be dragged along in a medium that isn't physically moving, similar to effects observed by Fizeau and explained by Einstein's theory of special relativity.
- This model uses modulations of permittivity and permeability in the form of traveling waves to mimic the behavior of a moving medium.
- The study discusses the requirements for modulating both permittivity and permeability and presents an equivalent transmission line model to illustrate these concepts.
Article Abstract
A moving medium drags light along with it as measured by Fizeau and explained by Einstein's theory of special relativity. Here we show that the same effect can be obtained in a situation where there is no physical motion of the medium. Modulations of both the permittivity and permeability, phased in space and time in the form of traveling waves, are the basis of our model. Space-time metamaterials are represented by effective bianisotropic parameters, which can in turn be mapped to a moving homogeneous medium. Hence these metamaterials mimic a relativistic effect without the need for any actual material motion. We discuss how both the permittivity and permeability need to be modulated to achieve these effects, and we present an equivalent transmission line model.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6911182 | PMC |
| http://dx.doi.org/10.1073/pnas.1915027116 | DOI Listing |
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