0000000000525857

AUTHOR

Silvia Necco

showing 3 related works from this author

Probing the chiral regime of Nf=2 QCD with mixed actions

2011

17 páginas, 15 figuras, 9 tablas.-- El Pdf es la versión pre-print del artículo: arXiv:1008.1870v2

QuarkQuantum chromodynamicsPhysicsNuclear and High Energy PhysicsParticle physicsChiral perturbation theory010308 nuclear & particles physicsOperator (physics)High Energy Physics::LatticeHigh Energy Physics - Lattice (hep-lat)Nuclear TheoryHigh Energy Physics::PhenomenologyLattice (group)FísicaFOS: Physical sciencesParticle Physics - LatticeFermion01 natural sciencesStrange matterHigh Energy Physics - LatticeLattice gauge theory0103 physical sciencesddc:530High Energy Physics::Experiment010306 general physics
researchProduct

Testing chiral effective theory with quenched lattice QCD

2008

We investigate two-point correlation functions of left-handed currents computed in quenched lattice QCD with the Neuberger-Dirac operator. We consider two lattice spacings a ~ 0.09, 0.12 fm and two different lattice extents L ~ 1.5, 2.0 fm; quark masses span both the p- and the epsilon-regimes. We compare the results with the predictions of quenched chiral perturbation theory, with the purpose of testing to what extent the effective theory reproduces quenched QCD at low energy. In the p-regime we test volume and quark mass dependence of the pseudoscalar decay constant and mass; in the epsilon-regime, we investigate volume and topology dependence of the correlators. While the leading order b…

Quantum chromodynamicsPhysicsQuarkNuclear and High Energy PhysicsParticle physicsChiral perturbation theoryHigh Energy Physics::LatticeHigh Energy Physics - Lattice (hep-lat)Lattice Gauge theoryFOS: Physical sciencesFísicaParticle Physics - LatticeLattice QCDLattice QCDQCDFIS/02 - FISICA TEORICA MODELLI E METODI MATEMATICIPseudoscalarHigh Energy Physics - LatticeLattice (order)Effective field theoryExponential decayChiral lagrangians
researchProduct

Heavy-light mesons in the epsilon-regime

2009

We study the finite-size scaling of heavy-light mesons in the static limit. We compute two-point functions of chiral current densities as well as pseudoscalar densities in the epsilon-regime of heavy meson Chiral Perturbation Theory (HMChPT). As expected, finite volume dependence turns out to be significant in this regime and can be predicted in the effective theory in terms of the infinite-volume low-energy couplings. These results might be relevant for extraction of heavy-meson properties from lattice simulations.

High Energy Physics - LatticeHigh Energy Physics::LatticeHigh Energy Physics - Lattice (hep-lat)Nuclear TheoryHigh Energy Physics::PhenomenologyFOS: Physical sciencesFísicaParticle Physics - LatticeNuclear Experiment
researchProduct