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Padé approximants and variational methods for operator series

✍ Scribed by M. Pindor; G. Turchetti

Book ID
112901067
Publisher
Springer-Verlag
Year
1982
Weight
648 KB
Volume
71
Category
Article
ISSN
0369-3546

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📜 SIMILAR VOLUMES

Schwinger variational principle and Padé
Schwinger variational principle and Padé approximants
✍ C.R Garibotti 📂 Article 📅 1972 🏛 Elsevier Science 🌐 English ⚖ 483 KB

We show that any [N, M] Pade approximant to the nonrelativistic scattering amplitude is equivalent to solving the scattering equations in a particular fmite subspace. It follows that the Pad& approximants can be obtained by using appropriate trial functions in the Schwinger variational principle. Th

Distortion operator method and Padé appr
Distortion operator method and Padé approximants
✍ B Michalík 📂 Article 📅 1970 🏛 Elsevier Science 🌐 English ⚖ 503 KB

The continuous fraction expression of a partial-wave matrix element following from the distortion operator method developed before is proved to be an s-fraction expansion of the matrix element. The proof is more general, it applies to an arbitrary matrix element of T or K operator. One of our former