A Possible Canonical Theory for Description of Pairing Correlation : Comparison with the BCS Plus RPA Approach

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概要

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• In order to go beyond the conventional BCS plus RPA approach for the description of pairing correlation, we have developed a possible canonical theory. In this theory, we can exactly get rid of the well-known difficulty of the particle-number non-conservation in the BCS approximation. We give, in this paper, its approximate form in order to clarify the relation with the conventional approach. We show that our theory in its approximate form can reproduce the same result as that obtained by the BCS plus RPA approach. The equivalence between the approach developed by Suzuki et al. and the present one is also shown, within the RPA order at least. We give some perspective for the description of higher-order non-linear effect, such as the coupling between the pairing rotation and pairing vibration, in conclusion.

• 理論物理学刊行会の論文
• 1982-04-25

著者

• Kuriyama Atsushi

  Department Of Physics Kyoto University

• Yamamura Masatoshi

  Department Of Physics Kyoto University

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