The Light-Front Coupled-Cluster Method Applied to $${\phi_{1+1}^4}$$ ϕ 1 + 1 4 Theory

Critical coupling in (1+1)-dimensional light-front φ theory

The spontaneous symmetry breaking in (1+1)-dimensional φ 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 h̄ expansion. A critical coupling evaluated from the fi...

(1+1)-Dimensional Yang-Mills Theory Coupled to Adjoint Fermions on the Light Front

We consider SU(2) Yang-Mills theory in 1+1 dimensions coupled to massless adjoint fermions. With all fields in the adjoint representation the gauge group is actually SU(2)/Z2, which possesses nontrivial topology. In particular, there are two distinct topological sectors and the physical vacuum state has a structure analogous to a θ vacuum. We show how this feature is realized in light-front qua...

Critical Coupling in (1+1)-Dimensional Light-Front φ 4 Theory. II-effects of non-diagonal interactions-

Critical Coupling in (1+1)-Dimensional Light-Front φ 4 Theory. II-effects of non-diagonal interactions-

Light-Front QCD1+1 Coupled to Chiral Adjoint Fermions

We consider SU(N) gauge theory in 1+1 dimensions coupled to chiral fermions in the adjoint representation of the gauge group. With all fields in the adjoint representation the gauge group is actually SU(N)/ZN , which possesses nontrivial topology. In particular, there are N distinct topological sectors and the physical vacuum state has a structure analogous to a θ vacuum. We show how this featu...