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physics.class-ph2022★ 4 cited
Conservation of all Lipkin's zilches from symmetries of the standard electromagnetic action and a hidden algebra
Vasileios A. Letsios
In 1964, Lipkin discovered the zilches, a set of conserved quantities in free electromagnetism. Among the zilches, optical chirality was identified by Tang and Cohen in 2010, servi…
hep-th2022★ 12 cited
(Non-)unitarity of strictly and partially massless fermions on de Sitter space II: an explanation based on the group-theoretic properties of the spin-3/2 and spin-5/2 eigenmodes
Vasileios A. Letsios
In our previous article [Letsios 2023 J. High Energ. Phys. JHEP05(2023)015], we showed that the strictly massless spin-3/2 field, as well as the strictly and partially massless spi…