ar X iv : m at h . R A / 0 21 13 20 v 2 9 D ec 2 00 3 Sup - lattice 2 - forms and quantales ∗

ar X iv : h ep - l at / 0 61 20 21 v 1 1 9 D ec 2 00 6 Precision study of the SU ( 3 ) topological susceptibility in the continuum

We determine the topological susceptibility in the SU(3) pure gauge theory. We perform a series of high-statistics lattice studies and take the combined continuum and infinite volume limit. We find χtopr 4 0 = 0.0524(7)(6), which translates into χ 1/4 top = 193(1)(8)MeV with the second error exclusively due to the intrinsic scale ambiguity.

ar X iv : h ep - l at / 0 51 20 11 v 1 9 D ec 2 00 5 Nucleon structure from generalized parton distributions in lattice QCD ∗ †

This talk presents results from the QCDSF-UKQCD collaboration for moments of leading twist generalized parton distributions in two-flavor lattice QCD based on O(a) improved Wilson Fermions. We study helicity independent and helicity flip GPDs with a focus on densities of quarks in the transverse plane.

ar X iv : g r - qc / 9 21 20 13 v 1 2 1 D ec 1 99 2 Inhomogeneous and anisotropic cosmologies

ar X iv : h ep - l at / 9 41 21 00 v 1 2 3 D ec 1 99 4 1 Nonperturbative “ Lattice Perturbation Theory ” ∗

In principle, perturbation theory is unnecessary to solve QCD with lattice methods. Even the short distance calculations relating the lattice action to continuum actions could in principle be done by a → 0, V → ∞ brute force Monte Carlo calculations. In practise, perturbation theory has been essential to the progress of lattice methods. It is much easier and more powerful than Monte Carlo for s...

ar X iv : h ep - l at / 0 11 20 12 v 1 1 0 D ec 2 00 1 1 I = 0 scalar channel SCALAR

Using lattice QCD with dynamical Wilson fermions, we study I = 0 and J P = 0 + channel which is constructed by 1 √ 2 (¯ uu + ¯ dd)|0, in order to search for the σ meson. Our preliminary result shows that the connected and disconnected diagrams contribute to the σ meson propagator in the same order.