Physics – Quantum Physics
Scientific paper
2001-05-17
Physics
Quantum Physics
8 pages, 2 figures
Scientific paper
In this paper we continue to develop our approach to the chaoticity properties of the quantum Hamiltonian systems. Our earlier suggested chaoticity criterion characterizes the initial symmetry breaking and the destruction of the corresponding integrals of motion in a perturbed system, which causes the system's chaotisation. Transition from regularity to chaos in quantum systems occurs at a certain critical value of the perturbation parameter. In our previous papers we had to diagonalize the perturbed system's Hamiltonian matrix in order to estimate this parameter. In the present paper we demonstrate that the critical perturbation parameter for the transition from regularity to chaos can be estimated in the framework of the first order perturbation theory. The values of thus obtained critical parameter are in good agreement with the results of our previous precise calculations for Hennon-Heiles Hamiltonian and diamagnetic Kepler problem.
Bunakov V. E.
Ivanov Iu. B.
Panin R. B.
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