Can we apply 'Quantization' only from motion equation ?

Klaus_Hoffmann
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Can we apply 'Quantization' only from motion equation ??

Supposing you have the equation of motion (in terms of momenta and position)

F(\dot p_{a} , q_{a})=0

then can you obtain the 'Quantum analogue' without the intervention of the Lagrangian ?

and another question could we regard the expression

\int \mathcal D[q(t)] e^{-\int_{a}^{b}dt \mathcal L (q, \dot q , t)}

as a 'Zeta function' of something evaluated at a point s=1 where

\int_{a}^{b}dt \mathcal L (q, \dot q , t)} =logM[q(t)]

being M another functional, so the problems involving Functional integration (if not all many of them) could be sovled by Zeta regularization.
 
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