Can Non-Commutative Geometry Redefine Our Understanding of Phase Space?

mhill
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the question is if we have a classical phase space (p,q) the idea is using Heisenberg's uncertainty could we generalize the usual 'geometry' to a non-commutative phase space ?

for example we could impose the conditions [ x_i , x_j ]= iL_p \hbar

where L_p means Planck's Energy scale and the same for the momentum [ p_i , p_j ]= iL_p \hbar.

if someone could provide a good and comprehensible introduction to Non-commutative geometry book and how is used in physics (with examples) thanks a lot.
 
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Hmmm, I'm not quite sure what you're asking. If it's about Alain Connes's stuff, I know nothing about it. As for normal quantum mechanics, the state space is usually the Hibert Space spanned by the eigenvectors of the Hamiltonian. The closest thing to classical phase space is the Wigner distribution.
 
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If we release an electron around a positively charged sphere, the initial state of electron is a linear combination of Hydrogen-like states. According to quantum mechanics, evolution of time would not change this initial state because the potential is time independent. However, classically we expect the electron to collide with the sphere. So, it seems that the quantum and classics predict different behaviours!
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