Perturbative Tamm-Dancoff renormalization

Koji Harada; Atsushi Okazaki

doi:10.1103/PhysRevD.55.6198

Perturbative Tamm-Dancoff renormalization

Koji Harada, Atsushi Okazaki

Division for Theoretical Natural Science

Research output: Contribution to journal › Article › peer-review

17 Citations (Scopus)

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	https://doi.org/10.1103/PhysRevD.55.6198
Publication status	Published - 1997

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics
Physics and Astronomy (miscellaneous)

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