Bound states from the spectral Bethe-Salpeter equation
High Energy Physics - Phenomenology
2023-10-26 v1 High Energy Physics - Theory
Abstract
We compute the bound state properties of three-dimensional scalar theory in the broken phase. To this end, we extend the recently developed technique of spectral Dyson-Schwinger equations to solve the Bethe-Salpeter equation and determine the bound state spectrum. We employ consistent truncations for the two-, three- and four-point functions of the theory that recover the scaling properties in the infinite coupling limit. Our result for the mass of the lowest-lying bound state in this limit agrees very well with lattice determinations.
Cite
@article{arxiv.2310.16353,
title = {Bound states from the spectral Bethe-Salpeter equation},
author = {Gernot Eichmann and Andrés Gómez and Jan Horak and Jan M. Pawlowski and Jonas Wessely and Nicolas Wink},
journal= {arXiv preprint arXiv:2310.16353},
year = {2023}
}
Comments
15 pages, 16 figures