149 citations · 1.6k across the 52 of their papers we have counts for
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Apparent convergence in functional glueball calculations
Markus Q. Huber, Christian S. Fischer, Hèlios Sanchis-Alepuz
We scrutinize the determination of glueball masses in pure Yang-Mills theory from functional equations, i.e. Dyson-Schwinger and Bethe-Salpeter equations. We survey the state-of-th…
Glueballs from Dyson-Schwinger and Bethe-Salpeter equations
Markus Q. Huber, Christian S. Fischer, Hèlios Sanchis-Alepuz
The quenched spectrum of glueballs with positive charge parity is calculated from two-body bound state equations. As input, a self-contained solution for the primitively divergent…
How to determine the branch points of correlation functions in Euclidean space II: Three-point functions
Markus Q. Huber, Wolfgang J. Kern, Reinhard Alkofer
The analytic structure of elementary correlation functions of a quantum field is relevant for the calculation of masses of bound states and their time-like properties in general. I…
The analytic structure of three-point functions from contour deformations
Markus Q. Huber, Wolfgang J. Kern, Reinhard Alkofer
We explore the analytic structure of three-point functions using contour deformations. This method allows continuing calculations analytically from the spacelike to the timelike re…
Glueballs from bound state equations
Markus Q. Huber, Christian S. Fischer, Helios Sanchis-Alepuz
Glueballs are bound states in the spectrum of quantum chromodynamics which consist only of gluons. They belong to the group of exotic hadrons which are widely studied experimentall…
Quenched glueballs in the DSE/BSE framework
Markus Q. Huber, Christian S. Fischer, Hèlios Sanchis-Alepuz
The spectrum of glueballs with quantum numbers is calculated in quenched quantum chromodynamics from bound state equations. The…
Quenched glueball spectrum from functional equations
Markus Q. Huber, Christian S. Fischer, Hèlios Sanchis-Alepuz
We give an overview of results for the quenched glueball spectrum from two-body bound state equations based on the 3PI effective action. The setup, which uses self-consistently cal…
Higher spin glueballs from functional methods
Markus Q. Huber, Christian S. Fischer, Helios Sanchis-Alepuz
We calculate the glueball spectrum for spin up to J=4 and positive charge parity in pure Yang-Mills theory. We construct the full bases for J=0,1,2,3,4 and discuss the relation to…
Yang-Mills propagators in linear covariant gauges from Nielsen identities
Martin Napetschnig, Reinhard Alkofer, Markus Q. Huber +1
We calculate gluon and ghost propagators in Yang-Mills theory in linear covariant gauges. To that end, we utilize Nielsen identities with Landau gauge propagators and vertices as t…
Landau gauge Yang-Mills propagators in the complex momentum plane
Christian S. Fischer, Markus Q. Huber
We calculate the dressed gluon and ghost propagators of Landau gauge Yang-Mills theory in the complex momentum plane from their Dyson-Schwinger equations. To this end, we develop t…
Spectrum of scalar and pseudoscalar glueballs from functional methods
Markus Q. Huber, Christian S. Fischer, Hèlios Sanchis-Alepuz
We provide results for the spectrum of scalar and pseudoscalar glueballs in pure Yang-Mills theory using a parameter-free fully self-contained truncation of Dyson-Schwinger and Bet…
Correlation functions of Landau gauge Yang-Mills theory
Markus Q. Huber
Correlation functions of Yang-Mills theory in the Landau gauge are calculated from their equations of motion. The employed setup is completely parameter free and leads, within erro…
Exploring the Tan contact term in Yang-Mills theory
Ouraman Hajizadeh, Markus Q. Huber, Axel Maas +1
Reliably computing the free energy in a gauge theory like QCD is a challenging and resource-demanding endeavor. As an alternative, we explore here the possibility to obtain the ass…
Gluonic vertices and the gluon propagator in Landau gauge Yang-Mills theory
Markus Q. Huber
Correlation functions of Landau gauge Yang-Mills theory are calculated from their equations of motion. Solutions for the three- and four-gluon vertices and the role of two-loop dia…
Dense two-color QCD from Dyson-Schwinger equations
Romain Contant, Markus Q. Huber
We investigate quantum chromodynamics with two colors at nonvanishing density using Dyson-Schwinger equations. Lattice methods do not have a complex action problem in this theory.…
DoFun 3.0: Functional equations in Mathematica
Markus Q. Huber, Anton K. Cyrol, Jan M. Pawlowski
We present version 3.0 of the Mathematica package DoFun for the derivation of functional equations. In this version, the derivation of equations for correlation functions of compos…
Nonperturbative properties of Yang-Mills theories
Markus Q. Huber
Yang-Mills theories are an important building block of the standard model and in particular of quantum chromodynamics. Its correlation functions describe the behavior of its elemen…
On the quark-gluon vertex at non-vanishing temperature
Romain Contant, Markus Q. Huber, Christian S. Fischer +2
We perform a semi-perturbative calculation of the quark-gluon vertex inspired from the three-loop expanded 3PI effective action and investigate the relative strengths of the chiral…
On non-primitively divergent vertices of Yang-Mills theory
Markus Q. Huber
Two correlation functions of Yang-Mills beyond the primitively divergent ones, the two-ghost-two-gluon and the four-ghost vertices, are calculated and their influence on lower vert…
The quark propagators of QCD and QCD-like theories
Romain Contant, Markus Q. Huber
We investigate the phase structures of theories which differ from QCD only in the gauge group and can be simulated on the lattice at non-vanishing chemical potential . These the…
Phase structure and propagators at nonvanishing temperature for QCD and QCD-like theories
Romain Contant, Markus Q. Huber
We investigate the universality of truncation schemes for Dyson-Schwinger equations developed for quantum chromodynamics in theories which differ from quantum chromodynamics only i…
The quark propagator in QCD and QCD
Romain Contant, Markus Q. Huber
QCD-like theories provide testing grounds for truncations of functional equations at non-zero density, since comparisons with lattice results are possible due to the absence of the…
An exploratory study of Yang-Mills three-point functions at non-zero temperature
Markus Q. Huber
Results for three-point functions of Landau gauge Yang-Mills theory at non-vanishing temperature are presented and compared to lattice results. It is found that the three-gluon ver…
Three-point vertex functions in Yang-Mills Theory and QCD in Landau gauge
Adrian L. Blum, Reinhard Alkofer, Markus Q. Huber +1
Solutions for the three-gluon and quark-gluon vertices from Dyson-Schwinger equations and the three-particle irreducible formalism are discussed. Dynamical quarks (``unquenching'')…