37 citations · 117 across the 6 of their papers we have counts for
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hep-ph2020★ 37 cited
Four-quark states from functional methods
Gernot Eichmann, Christian S. Fischer, Walter Heupel +2
In this feature article we summarise and highlight aspects of the treatment of four-quark states with functional methods. Model approaches to those exotic mesons almost inevitably…
hep-ph2020★ 29 cited
The -meson: four-quark vs. two-quark components and decay width in a Bethe-Salpeter approach
Nico Santowsky, Gernot Eichmann, Christian S. Fischer +2
We study the dynamical generation of resonances in isospin singlet channels with mixing between two- and four-quark states. To this end we generalise a Bethe-Salpeter approach to f…