Topological susceptibility in full QCD: lattice results versus the prediction from the QCD partition function with granularity

Abstract

Recent lattice data from CP-PACS, UKQCD, SESAM/TXL and the Pisa group regarding the quark mass dependence of the topological susceptibility in 2-flavour QCD are compared to each other and to theoretical expectations. The latter get specified by referring to the QCD finite-volume partition function with ``granularity'' which accounts for the entropy brought by instantons and anti-instantons. The chiral condensate in $N_f=2$ QCD, if determined by this method, turns out surprisingly large.

24 pages, 9 figures containing 21 graphs; v2: modifications to account for the changes in the SESAM/TXL data, otherwise minor alterations, except for 4 new references added; to appear in Nucl. Phys. B

References in corpus (1)

• The quark condensate from K_{e_4} decays

Cited by in corpus (24)

• Theta dependence of SU(N) gauge theories in the presence of a topological term
• Effects of non-perturbatively improved dynamical fermions in QCD at fixed lattice spacing
• Precision study of the SU(3) topological susceptibility in the continuum
• Improved Wilson QCD simulations with light quark masses
• Chiral condensate from the twisted mass Dirac operator spectrum
• Topological susceptibility with the asqtad action
• Numerical Methods for the QCD Overlap Operator IV: Hybrid Monte Carlo
• Chiral properties of two-flavor QCD in small volume and at large lattice spacing
• Topological susceptibility with the improved Asqtad action
• Topological susceptibility in staggered fermion chiral perturbation theory
• The Large $N_c$ limit of QCD on the lattice
• ${\eta }^{\prime }$ and $\eta$ mesons at high T when the U_A(1) and chiral symmetry breaking are tied
• Determining the chiral condensate from the distribution of the winding number beyond topological susceptibility
• Mesoscopic QCD and the Theta Vacua
• Topological susceptibility in QCD with two flavors and 3-5 colors -- a pilot study
• A Numerical Study of the 2-Flavour Schwinger Model with Dynamical Overlap Hypercube Fermions
• Dynamical Simulations with Smeared Link Staggered Fermions
• Mixed Action Simulations on Staggered Background; Interpretation and Result for the 2-flavor QCD Chiral Condensate
• Topological susceptibility in Lattice QCD with unimproved Wilson fermions
• Topological charge density correlator in Lattice QCD with two flavours of unimproved Wilson fermions
• Temperature Dependence of the Axion Mass in a Scenario Where the Restoration of Chiral Symmetry Drives the Restoration of the $U_A(1)$ Symmetry
• Discretisation effects in the topological susceptibility in lattice QCD
• Topological susceptibility with three flavors of staggered quarks
• Topological susceptibility and excess kurtosis in SU(3) Yang-Mills theory