Meaning of the perturbation theory for a
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S. Graffi
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Article
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1982
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John Wiley and Sons
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English
β 154 KB
## Abstract It is proved that the Borel sum of the RayleighβSchrΓΆdinger perturbation expansion eigenvalue of the triple well anharmonic oscillators __p__^2^ + __x__^2^ β 2~__g__~^2__n__^__x__^2__n__+2^ + __g__^4__n__^__x__^4__n__+2^, __g__ > 0, __n__ = 2.3,β¦ is a complex eigenvalue of a different p