395 citations · 1.7k across the 46 of their papers we have counts for
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Twisted mass QCD thermodynamics: first results on apeNEXT
E. -M. Ilgenfritz, M. Müller-Preussker, A. Sternbeck +4
The motivations for simulating QCD thermodynamics with Wilson fermions and a twisted mass term are introduced. The twisted mass approach provides a natural infrared cutoff and O(a)…
Iterative methods for overlap and twisted mass fermions
T. Chiarappa, K. Jansen, K. -I. Nagai +6
We present a comparison of a number of iterative solvers of linear systems of equations for obtaining the fermion propagator in lattice QCD. In particular, we consider chirally inv…
Numerical simulations with two flavours of twisted-mass Wilson quarks and DBW2 gauge action
F. Farchioni, P. Hofmann, K. Jansen +9
Discretisation errors in two-flavour lattice QCD with Wilson-quarks and DBW2 gauge action are investigated by comparing numerical simulation data at two values of the bare gauge co…
Nf=2 Lattice QCD and Chiral Perturbation Theory
L. Scorzato, F. Farchioni, P. Hofmann +10
By employing a twisted mass term, we compare recent results from lattice calculations of Nf=2 dynamical Wilson fermions with Wilson Chiral Perturbation Theory (WChPT). The final go…
Parton Distribution Functions with Twisted Mass Fermions
S. Capitani, K. Jansen, M. Papinutto +3
We present a first Wilson twisted mass fermion calculation of the matrix element between pion states of the twist-2 operator, which is related to the the lowest moment < x > of the…
3-point functions from twisted mass lattice QCD at small quark masses
S. Capitani, K. Jansen, M. Papinutto +3
We show at the example of the matrix element between pion states of a twist-2, non-singlet operator that Wilson twisted mass fermions allow to compute this phenomenologically relev…
Scaling test of quenched Wilson twisted mass QCD at maximal twist
K. Jansen, M. Papinutto, A. Shindler +2
We present the results of an extended scaling test of quenched Wilson twisted mass QCD. We fix the twist angle by using two definitions of the critical mass, the first obtained by…
Dynamical twisted mass fermions
F. Farchioni, P. Hofmann, K. Jansen +10
We summarize four contributions about dynamical twisted mass fermions. The resulting report covers results for N_f=2 obtained from three different gauge actions, namely the standar…
Towards a non-perturbative computation of the RGI strange quark mass with two dynamical flavors
Michele Della Morte, Roland Hoffmann, Francesco Knechtli +4
The non-perturbative running of the quark mass in the Schroedinger functional scheme is computed over a large energy range (covering scales differing by two orders of magnitude). T…
Twisted mass fermions: neutral pion masses from disconnected contributions
F. Farchioni, K. Jansen, C. McNeile +12
Twisted mass fermions allow light quarks to be explored but with the consequence that there are mass splittings, such as between the neutral and charged pion. Using a direct calcul…
Non-perturbative quark mass renormalization in two-flavor QCD
Michele Della Morte, Roland Hoffmann, Francesco Knechtli +4
The running of renormalized quark masses is computed in lattice QCD with two flavors of massless O(a) improved Wilson quarks. The regularization and flavor independent factor that…
Flavour Breaking Effects of Wilson twisted mass fermions
K. Jansen, C. McNeile, C. Michael +6
We study the flavour breaking effects appearing in the Wilson twisted mass formulation of lattice QCD. In this quenched study, we focus on the mass splitting between the neutral an…
Quenched Scaling of Wilson twisted mass fermions
K. Jansen, M. Papinutto, A. Shindler +2
We investigate the scaling behaviour of quenched Wilson twisted mass fermions at maximal twist applying two definitions of the critical mass. The first definition uses the vanishin…
Lattice Spacing Dependence of the First Order Phase Transition for Dynamical Twisted Mass Fermions
F. Farchioni, K. Jansen, I. Montvay +7
Lattice QCD with Wilson fermions generically shows the phenomenon of a first order phase transition. We study the phase structure of lattice QCD using Wilson twisted mass fermions…
Light quarks with twisted mass fermions
K. Jansen, M. Papinutto, A. Shindler +2
We investigate Wilson twisted mass fermions in the quenched approximation using different definitions of the critical bare quark mass m_c to realize maximal twist and, correspondin…
Meson correlators above deconfinement
S. Datta, F. Karsch, P. Petreczky +1
We review recent progress in studying spectral functions for mesonic observables at finite temperatures, by analysis of imaginary time correlators directly calculated on isotropic…
The phase structure of lattice QCD with two flavours of Wilson quarks and renormalization group improved gluons
F. Farchioni, K. Jansen, I. Montvay +6
The effect of changing the lattice action for the gluon field on the recently observed [1] first order phase transition near zero quark mass is investigated by replacing the Wilson…
Charmonia at finite momenta in a deconfined plasma
Saumen Datta, Frithjof Karsch, Peter Petreczky +2
Lattice studies of charmonium systems have indicated that in a deconfined gluonic plasma ground state charmonia survive as bound states upto temperatures \~ 2 Tc. After surveying t…
Recent results on moments of parton distribution functions
I. Wetzorke, K. Jansen, F. Palombi +1
We report on recent results for the pion and nucleon matrix element of the twist-2 operator corresponding to the average momentum of non-singlet quark densities. We discuss finite…
Comparison between overlap and twisted mass fermions towards the chiral limit
W. Bietenholz, S. Capitani, T. Chiarappa +10
We compare overlap fermions, which are chirally invariant, and Wilson twisted mass fermions in the approach to the chiral limit. Our quenched simulations reveal that with both form…
Comparing iterative methods for overlap and twisted mass fermions
T. Chiarappa, K. Jansen, K. -I. Nagai +6
We present a systematic comparison of various iterative methods to obtain the fermion propagator with both overlap and twisted mass fermions at fixed pion mass in the quenched appr…
Twisted mass quarks and the phase structure of lattice QCD
F. Farchioni, R. Frezzotti, K. Jansen +7
The phase structure of zero temperature twisted mass lattice QCD is investigated. We find strong metastabilities in the plaquette observable when the untwisted quark mass assumes p…
Non-perturbative Pion Matrix Element of a twist-2 operator from the Lattice
M. Guagnelli, K. Jansen, F. Palombi +3
We give a continuum limit value of the lowest moment of a twist-2 operator in pion states from non-perturbative lattice calculations. We find that the non-perturbatively obtained r…
Charmonium systems after the deconfinement transition
Saumen Datta, Frithjof Karsch, Peter Petreczky +1
The behavior of charmonia after the deconfinement transition is investigated on quenched lattices. Analysis of temporal correlators on fine lattices at temperatures upto 3 T_c show…