Quasisecular Renormalization of theModel of Quantum Field Theory
- 15 July 1972
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review D
- Vol. 6 (2) , 520-528
- https://doi.org/10.1103/physrevd.6.520
Abstract
The Heisenberg equations of the model of quantum field theory in one space dimension are analyzed by a modified perturbation method. The modification focuses on terms with vanishing and small energy denominators. These terms give rise to operator-valued frequency (mass) renormalization and amplitude (wave-function) renormalization. These renormalization effects remain present in the limit of an infinite system because the number of terms with small energy denominators becomes infinite.
Keywords
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