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Volumn 107, Issue 46, 2003, Pages 9887-9897

Tensor contraction engine: Abstraction and automated parallel implementation of configuration-interaction, coupled-cluster, and many-body perturbation theories

Author keywords

[No Author keywords available]

Indexed keywords

COMPUTATIONAL CHEMISTRY SOFTWARE PACKAGES; CONFIGURATION-INTERACTION THEORY; COUPLED CLUSTER; MANY-BODY PERTURBATION THEROIES; TENSOR CONTRACTION ENGINE;

EID: 0345566357     PISSN: 10895639     EISSN: None     Source Type: Journal    
DOI: 10.1021/jp034596z     Document Type: Article
Times cited : (392)

References (32)
  • 24
    • 0345189101 scopus 로고    scopus 로고
    • note
    • It is assumed that the first binary contraction involves an integral tensor and that the subsequent contractions occur sequentially; ABCDE (with A being an integral tensor) may be evaluated as (((AB)C)D)E, (((AD)E)C)... but not as (((BC)A)D)E, (AB)((CD)E)... This assumption is usually correct for an operation cost minimal solution to the strength reduction of an individual multiple tensor contraction, when the conditions discussed in section 2.3 are met.
  • 27
    • 0344326668 scopus 로고    scopus 로고
    • note
    • The conditions imposed are readily satisfield by CC and CI theories, but they may become a severe constraint on MBPT, in which a deexcitation tensor enters the formalisms when Wigner's 2n + 1 rule is invoked. It is possible to relax these conditions at the expense of some of the restrictions in the index ranges or the flexibility in the strength reduction. This issue is deferred for future investigations and will not be discussed any further in this article.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.