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THE FREE DIRAC SPINORS OF THE SPIN BASIS ON THE DE SITTER EXPANDING UNIVERSE
https://doi.org/10.1142/S0217732311036048Cited by:11 (Source: Crossref)
Abstract
It is shown that on the de Sitter spacetime the global behavior of the free Dirac spinors in momentum representation is determined by several phase factors which are functions of momentum with special properties. Such suitable phase functions can be chosen for writing down the free Dirac quantum modes of the spin basis that are well-defined even for the particles at rest in the moving local charts where the modes of the helicity basis remain undefined. Under quantization, these modes lead to a basis in which the one-particle operators keep their usual forms apart from the energy operator which lays out a specific term depending on the concrete phase function one uses.
PACS: 04.62.+v
