Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2001-06-02
Phys.Rev. D65 (2002) 066003
Physics
High Energy Physics
High Energy Physics - Theory
11 pages, Revtex. The presentation has been improved, the subsection on high dimensions has been modified. This version will a
Scientific paper
10.1103/PhysRevD.65.066003
We give simple representations for quantum theories in which the position commutators are non vanishing constants. A particular representation reproduces results found using the Moyal star product. The notion of exact localization being meaningless in these theories, we adapt the notion of ``maximally localized states'' developed in another context . We find that gaussian functions play this role in a 2+1 dimensional model in which the non commutation relations concern positions only. An interpretation of the wave function in this non commutative geometry is suggested. We also analyze higher dimensional cases. A possible incidence on the causality issue for a Q.F.T with a non commuting time is sketched.
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