Noncommutative quantum mechanics as a constrained system

Details Noncommutative quantum mechanics as a constrained system Noncommutative quantum mechanics as a constrained system

2001-12-07

arxiv.org/abs/hep-th/0112053v2

Physics

High Energy Physics

High Energy Physics - Theory

8 pages, LaTex file, Minor corrections and references added

Scientific paper

It is shown that quantum mechanics on noncommutative spaces (NQM) can be obtained by the canonical quantization of some underlying second class constrained system formulated in extended configuration space. It leads, in particular, to an intriguing possibility of quantization in terms of the initial (noncommutative) variables. Two different formulations are discissed. The first one is appropriate for at most quadratic potential. The noncommutativity parameter and rank of matrix of the constraint brackets depend on the potential. It explains appearance of two phases of the resulting NQM. The second formulation is appropriate for an arbitrary potential. In both cases the corresponding Lagrangian action is presented and quantized, which leads to quantum mechanics with ordinary product replaced by the Moyal product.

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