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Perturbation theory at large order: The choice of integration contour

✍ Scribed by Davison E. Soper


Book ID
116142427
Publisher
Elsevier Science
Year
1978
Tongue
English
Weight
393 KB
Volume
143
Category
Article
ISSN
0550-3213

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Given a basis, the matrix represntation of a hermitian operator 8 = 6(O) + 6") is partitioned 0 =O(")'+O(\*y such that@') and@'r have the same eigenvectors and the euclidenn norm ofo(l)' IS a minimum. This splitting cc\:responds to the s&called Epstein-Nesbet partition in perturbation theory. The p