Symmetry breaking in light-front ${\varphi }^4$ theory

Abstract

We consider the symmetric and broken phases of light-front ${\varphi }^4$ theory in two dimensions. In both cases the mass of the lowest state is computed and its dependence on the coupling used to infer critical coupling values. The structure of the eigenstate is examined to determine whether it shows the signs of critical behavior, specifically whether the one-body sector becomes improbable relative to the higher Fock sectors. In attempts to establish this behavior, we consider both sector-independent and sector-dependent constituent masses.

8 pages, 3 figures, RevTeX 4.1; contributed to Lightcone 2016, Lisbon, Portugal, Sept 5-8, 2016

References in corpus (5)

• Systematic renormalization scheme in light-front dynamics with Fock space truncation
• Nonperturbative light-front Hamiltonian methods
• Two-dimensional light-front ${\varphi }^4$ theory in a symmetric polynomial basis
• Application of the light-front coupled-cluster method to ${\varphi }^4$ theory in two dimensions
• Basis of symmetric polynomials for many-boson light-front wave functions