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Prog. Theor. Phys. Vol. 93 No. 5 (1995) pp. 905-917

[ Full Text PDF : FREE ACCESS (536K) ]

Effective Operators in Time-Independent Approach

Kenji Suzuki and Ryoji Okamoto

Department of Physics, Kyusyu Institute of Technology, Kitakyushu 804

(Received February 20, 1995)

Abstract:

An effective operator Θeff is defined so that it operates in a restricted model space and gives the same matrix element as that of the original operator Θ between the corresponding true eigenstates. The Θeff is determined dependently on the model-space eigenstates, and therefore various types of Θeff are possible. General solutions for Θeff are derived in the time-independent and algebraic approach. These Θeff contain the usual non-Hermitian and Hermitian effective operators as special cases. The explicit expansion form for Θeff is given by extending the \hatQ-box formalism of Kuo et al. developed in the derivation of the effective interaction to the problem of constructing the effective operator.


URL : http://ptp.ipap.jp/link?PTP/93/905/
DOI : 10.1143/PTP.93.905

[ Full Text PDF : FREE ACCESS (536K) ] Citation:


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