Abstract
A new two-step renormalization procedure is proposed. In the first step, the effects of high-energy states are considered in the conventional (Feynman) perturbation theory. In the second step, the coupling to many-body states is eliminated by a similarity transformation. The resultant effective Hamiltonian contains only interactions which do not change particle number. It is subject to numerical diagonalization. We apply the general procedure to a simple example for the purpose of illustration.
| Original language | English |
|---|---|
| Pages (from-to) | 6198-6208 |
| Number of pages | 11 |
| Journal | Physical Review D - Particles, Fields, Gravitation and Cosmology |
| Volume | 55 |
| Issue number | 10 |
| DOIs | |
| Publication status | Published - 1997 |
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics
- Physics and Astronomy (miscellaneous)