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Chapter 1 Quantum kinetic equations: an introduction

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Most general observable<br />

➠ Any classical observable a(x, p) gives rise to a<br />

qu<strong>an</strong>tum observable A = Op(a) according to the<br />

Weyl qu<strong>an</strong>tization rule:<br />

Op(a)ψ = 1<br />

(2π) d<br />

<br />

a= Weyl symbol of Op(a).<br />

x + y<br />

a(<br />

2 , k)ψ(y)eik(x−y) dk dy<br />

➠ Ex. 3: Classical Hamiltoni<strong>an</strong> Hc = |p| 2 /2 + V →<br />

qu<strong>an</strong>tum Hamiltoni<strong>an</strong><br />

Op(Hc) = H = −( 2 /2)∆ + V<br />

(Summary) Pierre Degond - <strong>Qu<strong>an</strong>tum</strong> fluid models - Cetraro, sept 2006<br />

(Conclusion)<br />

7

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