Physics – Quantum Physics
Scientific paper
1995-04-17
Phys.Lett. B356 (1995) 56-60
Physics
Quantum Physics
9 pages, LaTeX, 1 figure can be obtained from the author
Scientific paper
10.1016/0370-2693(95)00814-2
The problem of finding the large order asymptotics for the eigenfunction perturbation theory in quantum mechanics is studied. The relation between the wave function argument x and the number of perturbation theory order k that allows us to construct the asymptotics by saddle-point technique is found: $x/k^{1/2}=const$, k is large. Classical euclidean solutions starting from the classical vacuum play an important role in constructing such asymptotics. The correspondence between the trajectory end and the parameter $x/k^{1/2}$ is found. The obtained results can be applied to the calculation of the main values of the observables depending on k in the k-th order of perturbation theory at larges k and, probably, to the multiparticle production problem.
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