439 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- University of GrazAT211 papers
- Graz University of TechnologyAT46 papers
- Austrian Academy of SciencesAT17 papers
- Centre National de la Recherche ScientifiqueFR16 papers
- University of ViennaAT16 papers
- Institute of High Energy PhysicsCN13 papers
- Justus-Liebig-Universität GießenDE13 papers
- Heidelberg UniversityDE11 papers
- European Southern ObservatoryCL8 papers
- GSI Helmholtz Centre for Heavy Ion ResearchDE7 papers
- Helmholtz-Zentrum Dresden-RossendorfDE7 papers
- Jožef Stefan InstituteSI7 papers
21 papers · 1 filter
Correctness criteria for complex Langevin
Michael Mandl
The complex Langevin approach is a promising method for the numerical treatment of systems with a sign problem, for which conventional lattice field theory techniques based on impo…
Hints for a Geon from Causal Dynamic Triangulations
Axel Maas, Simon Plätzer, Felix Pressler
The existence of geons, physical states of self-bound gravitons, has long been proposed. In the context of four-dimensional causal dynamical triangulation simulations we investigat…
The Role of Integration Cycles in Complex Langevin Simulations
Michael W. Hansen, Michael Mandl, Erhard Seiler +1
Complex Langevin simulations are an attempt to solve the sign (or complex-action) problem encountered in various physical systems of interest. The method is based on a complexifica…
Topological features of the deconfinement transition
Sz. Borsanyi, Z. Fodor, D. A. Godzieba +4
The first order transition between the confining and the center symmetry breaking phases of the SU(3) Yang-Mills theory is marked by discontinuities in various thermodynamics funct…
The spectrum of GUT-like gauge-scalar models
Elizabeth Dobson, Axel Maas, Bernd Riederer
Past lattice simulations tentatively suggested that the spectrum of observable particles in BSM theories is qualitatively different than perturbatively expected. The discrepancy ca…
Multiple breaking patterns in the Brout-Englert-Higgs effect beyond perturbation theory
Elizabeth Dobson, Axel Maas, Bernd Riederer
In many BSM theories, especially GUTs, introducing a Brout-Englert-Higgs effect allows for multiple breaking patterns of the gauge symmetry. The possibility to select a particular…
Investigating vector boson scattering: A fully gauge-invariant study
Bernd Riederer, Axel Maas
Vector boson scattering (VBS) plays a central role in the search for new physics at collider experiments such as ATLAS and CMS at the LHC. Usually predictions for this kind of proc…
Vector boson scattering from the lattice
Patrick Jenny, Axel Maas, Bernd Riederer
We study vector-boson scattering of the physical, gauge-invariant states in a reduced standard-model setup on the lattice for various parameter sets. To this end, the phase shift i…
Exploring SU(3)-Higgs theories
Elizabeth Dobson, Axel Maas, Bernd Riederer
The requirement of manifest gauge invariance leads to a conflict between perturbative and non-perturbative predictions for the low-energy spectra of grand-unified theories. These c…
A composite massless vector boson
Vincenzo Afferrante, Axel Maas, Pascal Törek
In a non-perturbative gauge-invariant formulation of grand-unified theories all low energy vector states need to be composite with respect to the high-scale gauge group, including…
The quenched SU(2) scalar-gluon vertex in minimal Landau gauge
Axel Maas
The question of whether confining effects are visible in correlation functions is a long-standing one. Complementing investigations on the propagators of fundamental and adjoint sc…
Finite-density gauge correlation functions in QC2D
Tamer Boz, Ouraman Hajizadeh, Axel Maas +1
2-color QCD is the simplest QCD-like theory which is accessible to lattice simulations at finite density. It therefore plays an important role to test qualitative features and to p…
Exploratory study of the off-shell properties of the weak vector bosons
Axel Maas, Sebastian Raubitzek, Pascal Törek
Gauge invariance requires even in the weak interactions that physical, observable particles are described by gauge-invariant composite operators. Such operators have the same struc…
The quenched SU(2) adjoint scalar propagator in minimal Landau gauge
Axel Maas
It is a long-standing question whether the confinement of matter fields in QCD has an imprint in the (gauge-dependent) correlation functions, especially the propagators. In particu…
The spectrum of an SU(3) gauge theory with a fundamental Higgs field
Axel Maas, Pascal Törek
In gauge theories, the physical, experimentally observable spectrum consists only of gauge-invariant states. This spectrum can be different from the elementary spectrum even at wea…
Gluon and ghost correlation functions of 2-color QCD at finite density
Ouraman Hajizadeh, Tamer Boz, Axel Maas +1
2-color QCD, i. e. QCD with the gauge group SU(2), is the simplest non-Abelian gauge theory without sign problem at finite quark density. Therefore its study on the lattice is a be…
Dependence of the propagators on the sampling of Gribov copies inside the first Gribov region of Landau gauge
Axel Maas
Beyond perturbation theory the number of gauge copies drastically increases due to the Gribov-Singer ambiguity. Any way of treating them defines, in principle, a new, non-perturbat…
Gauge engineering and propagators
Axel Maas
Beyond perturbation theory gauge-fixing becomes more involved due to the Gribov-Singer ambiguity: The appearance of additional gauge copies requires to define a procedure how to ha…
Predicting the singlet vector channel in a partially Higgsed gauge theory
A. Maas, P. Törek
We study a toy version of a grand-unified theory on the lattice: An gauge theory, which experiences a Brout-Englert-Higgs effect due to a single Higgs field in the fundamen…
The quenched SU(2) fundamental scalar propagator in minimal Landau gauge
Axel Maas
It is a long-standing question whether the confinement of matter fields in QCD has an imprint in the (gauge-dependent) correlation functions, especially the propagators. As the ana…
More on the properties of the first Gribov region in Landau gauge
Axel Maas
Complete gauge-fixing beyond perturbation theory in non-Abelian gauge theories is a non-trivial problem. This is particularly evident in covariant gauges, where the Gribov-Singer a…