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An asymptotic functional-integral solution for the Schrödinger equation with polynomial potential. (English) Zbl 1172.35068

Summary: A functional integral representation for the weak solution of the Schrödinger equation with a polynomially growing potential is proposed in terms of an analytically continued Wiener integral. The asymptotic expansion in powers of the coupling constant \(\lambda \) of the matrix elements of the Schrödinger group is studied and its Borel summability is proved.

MSC:

35Q55 NLS equations (nonlinear Schrödinger equations)
35J10 Schrödinger operator, Schrödinger equation
35C15 Integral representations of solutions to PDEs
35C20 Asymptotic expansions of solutions to PDEs
37K10 Completely integrable infinite-dimensional Hamiltonian and Lagrangian systems, integration methods, integrability tests, integrable hierarchies (KdV, KP, Toda, etc.)
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References:

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