37 citations · 37 across the 2 of their papers we have counts for
5 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…
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…
Light mesons in QCD and unquenching effects from the 3PI effective action
Richard Williams, Christian S. Fischer, Walter Heupel
We investigate the impact of unquenching effects on QCD Green's functions, in the form of quark-loop contributions to both the gluon propagator and three-gluon vertex, in a three-l…
The light scalar mesons as tetraquarks
Gernot Eichmann, Christian S. Fischer, Walter Heupel
We present a numerical solution of the four-quark Bethe-Salpeter equation for ground-state scalar tetraquarks with J^PC = 0^++. We find that the four-body equation dynamically gene…
Tetraquarks from the Bethe-Salpeter equation
Gernot Eichmann, Christian S. Fischer, Walter Heupel
We present a numerical solution of the four-quark Bethe-Salpeter equation for a scalar tetraquark. We find that the four-body equation dynamically generates pseudoscalar poles in t…