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Optical structures, algebraically special spacetimes, and the Goldberg-Sachs theorem in five dimensions
algebraically special spacetimes Goldberg-Sachs theorem
2010/12/20
Optical (or Robinson) structures are one generalisation of four-dimensional shearfree congruences of null geodesics to higher dimensions. They are Lorentzian analogues of complex and CR structures. In...
Optical properties of a two-nanospheroid cluster: analytical approach
Optical properties two-nanospheroid cluster analytical approach
2010/11/11
Optical properties of a plasmonic nano-antenna made of two metallic nanospheroids (prolate or oblate) are investigated analytically in quasistatic approximation. It is shown that in clusters of two na...