Geodesic
On the Inversion Formula of Linear Quantization and the Evolution Equation for the Wigner Function
Trudy Matematicheskogo Instituta imeni V.A. Steklova, Mathematics of Quantum Technologies, Tome 313 (2021), pp. 23-32.

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We consider the inversion problem for linear quantization defined by an integral transformation relating the matrix of a quantum operator to its classical symbol. For an arbitrary linear quantization, we construct evolution equations for the density matrix and the Wigner function. It is shown that the Weyl quantization is the only one for which the evolution equation of the Wigner function is free of a quasi-probability source, which distinguishes this quantization as the only physically adequate one in the class under consideration. As an example, we give an exact stationary solution for the Wigner function of a harmonic oscillator with an arbitrary linear quantization, and construct a sequence of quantizations that approximate the Weyl quantization and tend to it in the weak sense so that the Wigner function remains positive definite.
Keywords: approximating quantization, Wigner function, stationary solution.
Mots-clés : inverse quantization, evolution equation 
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L. A. Borisov; Yu. N. Orlov. On the Inversion Formula of Linear Quantization and the Evolution Equation for the Wigner Function. Trudy Matematicheskogo Instituta imeni V.A. Steklova, Mathematics of Quantum Technologies, Tome 313 (2021), pp. 23-32. http://geodesic.mathdoc.fr/item/TM_2021_313_a2/

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