A Possible Generalization of Quantum Mechanics

Details A Possible Generalization of Quantum Mechanics A Possible Generalization of Quantum Mechanics

2005-12-16

arxiv.org/abs/quant-ph/0512127v2

Physics

Quantum Physics

5 pages, revtex4; largely revised with the time-ordering-modified Feynman path integral (Eq. (7)) added and the original examp

Scientific paper

A "minimal" generalization of Quantum Mechanics is proposed, where the Lagrangian or the action functional is a mapping from the (classical) states of a system to the Lie algebra of a general compact Lie group, and the wave function takes values in the corresponding group algebra. This formalism admits a probability interpretation and a suitable dynamics, but has no obvious classical correspondence. Allowing the Lagrangian or the action functional to take values in a general Lie algebra instead of only the real number field (actually the u(1) algebra) enlarges the extent of possible physical laws that can describe the real world. The generalized quantum dynamics of a point particle in a background gauge field is given as an example, which realizes the gauge invariance by a Wilson line structure and shows that some Schrodinger-like equation can be deduced within this formalism. Some possible developments of this formalism are also discussed.

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