J. F. Carinena, J. Clemente-Gallardo, G. Marmo
Published 2007-01-19, updated 2007-03-23Version 2
We show that it is possible to represent various descriptions of Quantum Mechanics in geometrical terms. In particular we start with the space of observables and use the momentum map associated with the unitary group to provide an unified geometrical description for the different pictures of Quantum Mechanics. This construction provides an alternative to the usual GNS construction for pure states.
Comments: 16 pages. To appear in Theor. Math. Phys. Some typos corrected. Definition 2 in page 5 rewritten
Journal: Theor.Math.Phys.152:894-903,2007
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