Fully self-Consistent RPA Description of the Many Level Pairing Model

J. HIRSCH; A. MARIANO; J.DUKELSKY; P.SCHUCK

ANNALS OF PHYSICS (NEW YORK)

ACADEMIC PRESS INC ELSEVIER SCIENCE

Lugar: Amsterdam; Año: 2002 vol. 296 p. 1 - 24

0003-4916

The self-consistent RPA (SCRPA) equations in the particle–particle channel are solved without any approximation for the picket fence model. The results are in excellent agreement with the exact solutions found with the Richardson method. Particularly interesting features are that screening corrections reverse the sign of the interaction and that SCRPA yields the exact energies in the case of two levels with two particles.