Scalar theories and symmetry breaking in the light-front coupled-cluster method
arXiv:1402.0222 · doi:10.1007/s00601-014-0884-5
Abstract
We extend the light-front coupled-cluster (LFCC) method to include zero modes explicitly, in order to be able to compute vacuum structure in theories with symmetry breaking. Applications to phi^3 and phi^4 theories are discussed as illustrations and compared with variational coherent-state analyses.
8 pages, 1 figure, RevTeX4.1; based on a talk contributed to the Lightcone 2013 workshop, Skiathos, Greece, May 20-24, 2013