Non-perturbative states in the three-dimensional phi^4 theory

Details Non-perturbative states in the three-dimensional phi^4 theory Non-perturbative states in the three-dimensional phi^4 theory

1999-07-22

arxiv.org/abs/hep-lat/9907018v1

Nucl.Phys.Proc.Suppl. 83 (2000) 715-717

Physics

High Energy Physics

High Energy Physics - Lattice

LATTICE99(spin) - 3 pages, 2 encapsulated postscript figures

Scientific paper

We study the spectrum of massive excitations of the three-dimensional phi^4 and Ising models, in the broken-symmetry phase. Using a variational method, we show that the spectrum contains all the 0+ states that one expects from duality with the glueball spectrum of the Z(2) gauge model. From the point of view of continuum phi^4 theory, we show that at least one of the states we find has a non-perturbative origin.

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