Publications (12)
Monte-Carlo simulations of overlap Majorana fermions
S. Piemonte, G. Bergner, C. López
Supersymmetric Yang-Mills (SYM) theories in four dimensions exhibit many interesting non-perturbative phenomena that can be studied by means of Monte Carlo lattice simulations. How…
Acceleration of the Arnoldi method and real eigenvalues of the non-Hermitian Wilson-Dirac operator
G. Bergner, J. Wuilloud
In this paper, we present a method for the computation of the low-lying real eigenvalues of the Wilson-Dirac operator based on the Arnoldi algorithm. These eigenvalues contain info…
Phase structure of the N=1 supersymmetric Yang-Mills theory at finite temperature
G. Bergner, P. Giudice, G. Münster +2
Supersymmetry (SUSY) has been proposed to be a central concept for the physics beyond the standard model and for a description of the strong interactions in the context of the AdS/…
Ratio of kaon and pion leptonic decay constants with Wilson-clover twisted-mass fermions
C. Alexandrou, S. Bacchio, G. Bergner +12
We present a determination of the ratio of kaon and pion leptonic decay constants in isosymmetric QCD (isoQCD), , making use of the gauge ensembles produced by the Exte…
Pion Transition Form Factor from Twisted-Mass Lattice QCD and the Hadronic Light-by-Light -pole Contribution to the Muon
C. Alexandrou, S. Bacchio, G. Bergner +14
The neutral pion generates the leading pole contribution to the hadronic light-by-light tensor, which is given in terms of the nonperturbative transition form factor $\mathcal{F}_{…
Witten index and phase diagram of compactified N=1 supersymmetric Yang-Mills theory on the lattice
G. Bergner, P. Giudice, G. Münster +1
Owing to confinement, the fundamental particles of N=1 Supersymmetric Yang-Mills (SYM) theory, gluons and gluinos, appear only in colourless bound states at zero temperature. Compa…
Quark masses using twisted mass fermion gauge ensembles
C. Alexandrou, S. Bacchio, G. Bergner +24
We present a calculation of the up, down, strange and charm quark masses performed within the lattice QCD framework. We use the twisted mass fermion action and carry out simulation…
One flavour adjoint QCD with overlap fermions
G. Bergner, I. Soler Calero, J. C. Lopez +1
The infrared effective theory of adjoint QCD with one Dirac flavour is still under debate. The theory could be confining, conformal, or with a massless fermion in the infrared. The…
Complete supersymmetry on the lattice and a No-Go theorem: A simulation with intact supersymmetries on the lattice
G. Bergner
In this work a lattice formulation of a supersymmetric theory is proposed and tested that preserves the complete supersymmetry on the lattice. The results of a one-dimensional nonp…
First studies of the phase diagram of N=1 supersymmetric Yang-Mills theory
G. Bergner, P. Giudice, G. Münster +2
The behavior of supersymmetric theories at finite temperatures differs from that of other theories in certain aspects. Due to the different thermal statistics of bosons and fermion…
Compactified N=1 supersymmetric Yang-Mills theory on the lattice: Continuity and the disappearance of the deconfinement transition
G. Bergner, S. Piemonte
Fermion boundary conditions play a relevant role in revealing the confinement mechanism of N=1 supersymmetric Yang-Mills theory with one compactified space-time dimension. A deconf…
Determination of the light, strange and charm quark masses using twisted mass fermions
C. Alexandrou, S. Bacchio, G. Bergner +23
We present results for the light, strange and charm quark masses using twisted mass fermion ensembles at three values of the lattice spacing, including two ensembles si…