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- W2339332521 abstract "We demonstrate how to create localized $mathcal{PT}$-symmetric directionally invisible scatterers directly from a governing wave equation. Moreover, we can construct general non-$mathcal{PT}$-symmetric objects which exhibit directional invisibility, though such an effect is typically associated with $mathcal{PT}$-symmetric objects. Whereas previously the determining condition for an optical $mathcal{PT}$-symmetric device was a $mathcal{PT}$-symmetric complex refractive index, we show that a broader condition, requiring only the scattering potential to be $mathcal{PT}$-symmetric, leads to the same behavior. This enables the construction of $mathcal{PT}$-symmetric objects without a $mathcal{PT}$-symmetric complex refractive index, effectively doubling the number of possible invisible objects. Consequently, the set of gain-loss invisible objects is much broader than previously realized, and several examples are shown." @default.
- W2339332521 created "2016-06-24" @default.
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- W2339332521 date "2016-04-21" @default.
- W2339332521 modified "2023-09-26" @default.
- W2339332521 title "LocalizedPT-symmetric directionally invisible scatterers" @default.
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- W2339332521 doi "https://doi.org/10.1103/physreva.93.041803" @default.
- W2339332521 hasPublicationYear "2016" @default.
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