A method is presented for the treatment of particle-hole residual interactions that is both simple and extremely accurate. This method is compared with the random-phase approximation, Tamm-Dancoff approximation, and other approximations in the schematic model of Brown and the monopole model of Lipkin, Meshkov, and Glick.
- Received 16 November 1973
- Published in the issue dated May 1974
© 1974 The American Physical Society