First results with two light flavours of quarks with maximally twisted mass
arXiv:hep-lat/0610015
Abstract
We report on first results of an ongoing effort to simulate lattice QCD with two degenerate flavours of quarks by means of the twisted mass formulation tuned to maximal twist. By utilising recent improvements of the HMC algorithm, pseudo-scalar masses well below 300 MeV are simulated on volumes with spatial size larger than 2 fm at values of the lattice spacing similar or smaller than 0.1 fm. We present first evidence that scaling violations in the pseudo-scalar decay constant are small and well compatible with O(a) improvement. Additionally, exploratory results for the case of N_f=2+1+1 flavours are discussed.
arXiv comment15 pages, 7 figures, talk given at Lattice 2006 (spectroscopy)
References in corpus (32)
- Speeding up the Hybrid-Monte-Carlo algorithm for dynamical fermions
- Spontaneous Flavor and Parity Breaking with Wilson Fermions
- Chirally improving Wilson fermions II. Four-quark operators
- Finite volume effects for meson masses and decay constants
- HMC algorithm with multiple time scale integration and mass preconditioning
- Decay width of light quark hybrid meson from the lattice
- Twisted-mass lattice QCD with mass non-degenerate quarks
- Chirally improving Wilson fermions
- Speeding up Lattice QCD simulations with clover-improved Wilson Fermions
- Mixing of scalar glueballs and flavour-singlet scalar mesons
- Quark mass dependence of hadron masses from lattice QCD
- Twisted mass chiral perturbation theory at next-to-leading order
- Scaling test for Wilson twisted mass QCD
- Pion mass splitting and phase structure in Twisted Mass QCD
- On the phase structure of twisted mass lattice QCD
- Twisted-mass QCD, O(a) improvement and Wilson chiral perturbation theory
- Efficient Hadronic Operators in Lattice Gauge Theory
- Quenched Scaling of Wilson twisted mass fermions
- Spectrum of quenched twisted mass lattice QCD at maximal twist
- Non-perturbative Pion Matrix Element of a twist-2 operator from the Lattice
- Accelerating the Hybrid Monte Carlo algorithm
- Flavour Breaking Effects of Wilson twisted mass fermions
- Light quarks with twisted mass fermions
- Updating algorithms with multi-step stochastic correction
- Multiple molecular dynamics time-scales in Hybrid Monte Carlo fermion simulations
- Parton Distribution Functions with Twisted Mass Fermions
- Twisted mass QCD for the pion electromagnetic form factor
- The APENEXT project
- Dynamical twisted mass fermions
- Nf=2 Lattice QCD and Chiral Perturbation Theory
- Multi-Step stochastic correction in dynamical fermion updating algorithms
- Overlap fermions on a twisted mass sea