Relation between Classical and Pseudo-classical Spinning Particle

Details Relation between Classical and Pseudo-classical Spinning Particle Relation between Classical and Pseudo-classical Spinning Particle

1993-04-16

arxiv.org/abs/hep-th/9304064v2

Physics

High Energy Physics

High Energy Physics - Theory

10pages; minor typo corrections

Scientific paper

The spin degrees of freedom for the relativistic particle are described by either Poincar\'{e} group variables (classically) or Grassmann variables (pseudo-classically). The relationship between those two descriptions are given. In doing that, appropriate constraints are constructed to put into the lagrangian. Especially a natural relation of Poincar\'{e} group variables and Grassmann variables is obtained. Hopf fibration relating the spin momentum to the group is just the right transformation of the spin momentum under Poincar\'{e} group. And with the relation just mentioned, pseudoclassical lagrangian is derived naturally from the classical one.

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