37 citations · 112 across the 6 of their papers we have counts for
6 papers
Four-quark states from functional methods
Joshua Hoffer, Christian S. Fischer
The discovery of four-quark states attracted a lot of attention from the theoretical as well as the experimental side. To study their properties from QCD we use a functional framew…
Reply to comment on "The -meson: four-quark vs. two-quark components and decay width in a Bethe-Salpeter approach"
Nico Santowsky, Gernot Eichmann, Christian S. Fischer +2
In a recent comment [1] Blankleider and Kvinikhidze claim that our work [2] is based on a set of inconsistent Bethe-Salpeter equations for the coupling of four-quark to two-quark s…
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…
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…
Disentangling different structures in heavy-light four-quark states
Paul C. Wallbott, Gernot Eichmann, Christian S. Fischer
Models proposed to explain recently discovered heavy-light four-quark states already assume certain internal structures, i.e. the (anti)quark constituents are grouped into diquark/…
as a four-quark state in a Dyson-Schwinger/Bethe-Salpeter approach
Paul C. Wallbott, Gernot Eichmann, Christian S. Fischer
We generalise the framework of Dyson-Schwinger and Bethe-Salpeter equations for four-quark states to accommodate the case of unequal quark masses. As a first application, we consid…