Critical coupling in (1+1)-dimensional light-front $\phi^{4}$ theory
High Energy Physics - Theory
2009-10-31 v1
Abstract
The spontaneous symmetry breaking in (1+1)-dimensional theory is studied with discretized light-front quantization, that is, by solving the zero-mode constraint equation. The symmetric ordering is assumed for the operator-valued constraint equation. The commutation relation between the zero mode and each oscillator mode is calculated with expansion. A critical coupling evaluated from the first some terms in the expansion is consistent with the equal-time one . The same analysis is also made under another operator ordering.
Cite
@article{arxiv.hep-th/9805049,
title = {Critical coupling in (1+1)-dimensional light-front $\phi^{4}$ theory},
author = {Kazuto Oshima and Masanobu Yahiro},
journal= {arXiv preprint arXiv:hep-th/9805049},
year = {2009}
}