Response Function Technique for Calculating the Random-Phase Approximation Correlation Energy

Y. R. Shimizu; P. Donati; R. A. Broglia

doi:10.1103/PhysRevLett.85.2260

Response Function Technique for Calculating the Random-Phase Approximation Correlation Energy

Y. R. Shimizu, P. Donati, and R. A. Broglia

Phys. Rev. Lett. 85, 2260 – Published 11 September 2000

Abstract

We develop a scheme to exactly evaluate the correlation energy in the random-phase approximation, based on linear response theory [Y. R. Shimizu, J. D. Garrett, R. A. Broglia, M. Gallardo, and E. Vigezzi, Rev. Mod. Phys. 61, 131 (1989)]. It is demonstrated that our formula is equivalent to a contour integral representation recently proposed [F. Dönau, D. Almehed, and R. G. Nazmitdinov, Phys. Rev. Lett. 83, 280 (1999)] being numerically more efficient for realistic calculations. Examples are presented for pairing correlations in rapidly rotating nuclei.

Received 9 November 1999

DOI:https://doi.org/10.1103/PhysRevLett.85.2260

Authors & Affiliations

Y. R. Shimizu¹, P. Donati^2,3, and R. A. Broglia^2,3

¹Department of Physics, Kyushu University, Fukuoka 812-8581, Japan
²Dipartimento di Fisica, Università di Milano and INFN, Sezione di Milano, via Celoria 16, 20133 Milano, Italy
³The Niels Bohr Institute, University of Copenhagen, Blegdamsvej 17, DK-2100 Copenhagen Ø, Denmark