Manifestation of a nontrivial vacuum in discrete light cone quantization
High Energy Physics - Theory
2009-11-07 v2
Abstract
We study a (1+1)-dimensional model with a light-cone zero mode and constant external source to describe spontaneous symmetry breaking. In the broken phase, we find degenerate vacua and discuss their stability based on effective-potential analysis. The vacuum triviality is spurious in the broken phase because these states have lower energy than Fock vacuum. Our results are based on the variational principle.
Keywords
Cite
@article{arxiv.hep-th/0104012,
title = {Manifestation of a nontrivial vacuum in discrete light cone quantization},
author = {Takanori Sugihara and Masa-aki Taniguchi},
journal= {arXiv preprint arXiv:hep-th/0104012},
year = {2009}
}
Comments
4 pages, 2 figures, to appear in Phys. Rev. Lett