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On the large order asymptotics of general states in semiclassical quantum mechanics. (English) Zbl 0791.35113

Summary: We consider the limit \(\hslash\to 0\) of the solution \(\Phi(t,x,\hslash)\) of the Schrödinger equation: \[ i\hslash {{\partial\Phi(t,x,\hslash)} \over {\partial t}}=- {{\hslash^ 2} \over {2m}} {{d^ 2 \Phi(t,x,\hslash)} \over {dx^ 2}} +V(x) \Phi(t,x,\hslash). \] We prove that, for any integer \(l\geq 2\) and any initial condition \(\Phi(0,x,\hslash)\) that belongs to the Schwartz-class, a solution \(\Phi^*(t,x,\hslash)\) of the semiclassical equation approximates \(\Phi(t,x,\hslash)\) such as \[ \|\Phi^*(t,\cdot,\hslash)- \Phi(t,\cdot,\hslash)\|_{L^ 2} \leq C\hslash^{1/2} \qquad (\hslash\to 0) \] {}.

MSC:

35Q40 PDEs in connection with quantum mechanics
81Q20 Semiclassical techniques, including WKB and Maslov methods applied to problems in quantum theory

References:

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[2] G.A. Hagedorn , Semiclassical Quantum Mechanics. III: The Large Order Asymptotics and More General States , Ann. Phys. , T. 135 , 1981 , pp. 58 - 70 . MR 630204
[3] G.A. Hagedorn , Semiclassical Quantum Mechanics, IV: The Large Order Asymptotics and more General States in more than One Dimension , Ann. Inst. H. Poincaré , T. 42 , 1985 , pp. 363 - 374 . Numdam | MR 801234 | Zbl 0900.81053 · Zbl 0900.81053
[4] S. Robinson , The Semiclassical Limit of Quantum Dynamics, I: Time Evolution , J. Math. Phys. , T. 29 , 1988 , pp. 412 - 419 . MR 927028 | Zbl 0647.46060 · Zbl 0647.46060 · doi:10.1063/1.528029
[5] S. Robinson , The Semiclassical Limit of Quantum Dynamics, II: Scattering Theory , Ann. Inst. H. Poincaré , T. 48 , 1988 , pp. 281 - 296 . Numdam | MR 969167 | Zbl 0666.35071 · Zbl 0666.35071
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