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Relation Between Rigid-Body Motion,Isotropic Cones,and Spinors

Authors:	Luis J.?Boya author-information" > author-information__contact u-icon-before" > mailto:luisjo@unizar.es" title=" luisjo@unizar.es" itemprop=" email" data-track=" click" data-track-action=" Email author" data-track-label=" " >Email author,E. C. G.?Sudarshan author-information" > author-information__contact u-icon-before" > mailto:sudarshan@ph.utexas.edu" title=" sudarshan@ph.utexas.edu" itemprop=" email" data-track=" click" data-track-action=" Email author" data-track-label=" " >Email author

Affiliation:	(1) Departamento de Fisica Teorica, Facultad de Ciencias, Universidad de Zaragoza, E-50 009 Zaragoza, Spain;(2) Center for Particle Physics, Department of Physics, The University of Texas at Austin, Austin, Texas, 78712

Abstract:	No Heading Spinors play a role in classical physics, since the fact that the rotation group is not simply connected has consequences for macroscopic bodies. Here we relate the orientations of a rigid body to two-dimensional complex spinors by combining O. Rodrigues parameterization of rotations with Cartans 2:1 identification of spinors with complex isotropic 3-vectors.

Keywords:	spinors rigid-body rotation isotropic vectors
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