4 papers
Inhomogeneous transformations in a gauged twistor formulation of a massive particle
Shinichi Deguchi, Satoshi Okano
In this paper, we show that the mass-shell constraints in the gauged twistor formulation of a massive particle given in [Deguchi and Okano, Phys. Rev. D 93, 045016 (2016) [Erratum…
A classical mechanical model of two interacting massless particles in de Sitter space and its quantization
Naohiro Kanda, Satoshi Okano
A conformally invariant model of two interacting massless particles in Minkowski space was proposed by Casalbuoni and Gomis [1]. We generalize this model to the case of de Sitter s…
A no-go theorem for the -twistor description of a massive particle
Satoshi Okano, Shinichi Deguchi
It is proved that the -twistor expression of a particle's four-momentum vector reduces, by a unitary transformation, to the two-twistor expression for a massive particle or the…
Gauged twistor formulation of a massive spinning particle in four dimensions
Shinichi Deguchi, Satoshi Okano
We present a gauged twistor model of a free massive spinning particle in four-dimensional Minkowski space. This model is governed by an action, referred to here as the gauged gener…