37 citations · 117 across the 6 of their papers we have counts for
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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…
Four-quark states with charm quarks in a two-body Bethe-Salpeter approach
Nico Santowsky, Christian S. Fischer
We study the internal structure of a range of four-quark states with charm quark contributions using a two-body Bethe-Salpeter equation. Thereby, we examine charmonium-like states…
The light scalars: four- vs. two-quark states in the complex energy plane from Bethe-Salpeter equations
Nico Santowsky, Christian S. Fischer
We study the dynamical generation of scalar mesons in the light quark sector () and calculate the masses and widths for the and . To th…
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…