Non-commutativity from coarse grained classical probabilities

Details Non-commutativity from coarse grained classical probabilities Non-commutativity from coarse grained classical probabilities

2010-05-21

arxiv.org/abs/1005.3972v1

Physics

High Energy Physics

High Energy Physics - Theory

9 pages

Scientific paper

Non-commutative quantum physics at the atom scale can arise from coarse graining of a classical statistical ensemble at the Planck scale. Position and momentum of an isolated particle are classical observables which remain computable in terms of the coarse grained information. However, the commuting classical product of position and momentum observables is no longer defined in the coarse grained system, which is therefore described by incomplete statistics. The microphysical classical statistical ensemble at the Planck scale admits an alternative non-commuting product structure for position and momentum observables which is compatible with the coarse graining. Measurement correlations for isolated atoms are based on this non-commutative product structure. We present an explicit example for these ideas. It also realizes the discreteness of the spin observable within a microphysical classical statistical ensemble.

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