Perturbation theory for coupled anharmonic oscillators

Suvernev, Andrei A.; Goodson, David Z.
February 1997
Journal of Chemical Physics;2/15/1997, Vol. 106 Issue 7, p2681
Academic Journal
Details the application of the perturbation theory to a pair of coupled oscillators with cubic anharmonicity. Large-order perturbation theory shown to be more efficient computationally than numerical diagonalization of the Hamiltonian; Quadratic Pade summation of the energy expansions yielding convergent results for the real and imaginary parts of resonance eigenvalues.


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