title: Response function technique for calculating the random-phase approximation correlation energy
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. Donau, 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.
authors.affiliation: Department of Physics, Kyushu University, Fukuoka 812-8581, Japan.
authors.initials: YR
authors.lastname: Shimizu
authors.initials: P
authors.lastname: Donati
authors.initials: RA
authors.lastname: Broglia