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

M. Caselle; M. Hasenbusch; P. Provero

doi:10.1016/s0920-5632(00)91785-7

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arXiv · hep-lat/9907018

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

M. Caselle·M. Hasenbusch·P. Provero

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Abstract

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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M. Caselle, M. Hasenbusch, P. Provero. 1999-07-22. Non-perturbative states in the three-dimensional phi^4 theory. https://doi.org/10.1016/s0920-5632(00)91785-7

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