KRUSCHE, S (1993) LIGHT-CONE QUANTIZED YUKAWA MODEL IN 2+1 DIMENSIONS. PHYSICS LETTERS B, 298 (1-2). pp. 127-131. ISSN 0370-2693,
Full text not available from this repository.Abstract
We reinvestigate the one-loop and two-loop fermion self-energy in the light cone quantized Yukawa model. It is shown that the result coincides with the one obtained by applying a covariant formalism. No noncovariant counterterms or subtractions have to be introduced to restore Lorentz invariance and to make the fermion self-energy finite. We show that this can only be achieved by taking the noncovariant part of the light cone hamiltonian carefully into account. The answer for the fermion self-energy is compared with the one obtained by naively applying light cone perturbation theory. We demonstrate that in this approach the contributions from the noncovariant part of the hamiltonian are illegitimately eliminated by normal-ordering. Therefore in light cone quantization normal-ordering has to be done with care.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | INFINITE-MOMENTUM FRAME; QUANTUM FIELD-THEORIES; DIRAC FIELDS; SCALAR; |
| Depositing User: | Dr. Gernot Deinzer |
| Last Modified: | 19 Oct 2022 08:43 |
| URI: | https://pred.uni-regensburg.de/id/eprint/54159 |
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