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Slide-rule-like property of Wigner’s little groups and cyclic<i>S</i>matrices for multilayer optics
It is noted that 2x2 "S" matrices in multilayer optics can be represented by the Sp(2) group whose algebraic property is the same as the group of Lorentz transformations applicable to two spacelike and one timelike dimensions. It is also noted that Wigner's little groups have a slide-rule-like property that …