ar X iv : h ep - l at / 9 31 10 65 v 2 1 D ec 1 99 3 1 2 - and 3 - Point Gluon Correlation Functions on the Lattice

ar X iv : h ep - l at / 9 31 20 16 v 1 3 D ec 1 99 3 1 Lattice QCD Calculation of Hadron Scattering Lengths ∗

Method of calculating hadron multi-point functions and disconnected quark loop contributions which are not readily accessible through conventional techniques is proposed. Results are reported for π-π, π-N and N-N scattering lengths and the flavor singlet-non singlet meson mass splitting estimated in quenched QCD.

ar X iv : h ep - l at / 9 31 10 56 v 1 2 9 N ov 1 99 3 1 QCD correlation functions and instantons

QCD point-to-point correlation functions at distances .2-1 fm are very different for different channels, and they tell us a lot about inter-quark interactions. Recent studies based on experimental data, 'instanton liquid' approach and lattice measurements are reviewed. Agreement between all of them show that instanton-induced forces dominate the light quark physics, and new findings by Negele e...

ar X iv : h ep - t h / 03 12 24 4 v 1 1 9 D ec 2 00 3 FIAN / TD / 07 – 03 On Sp ( 2 M ) Invariant Green Functions

Explicit form of two-point and three-point Sp (2M) invariant Green functions is found.

ar X iv : h ep - p h / 99 12 28 8 v 2 1 5 D ec 1 99 9 Lattice Calculations and Hadron Physics

ar X iv : h ep - l at / 9 90 91 16 v 1 1 4 Se p 19 99 The flavour and quark mass dependence of thermodynamic quantities in lattice

The dependence of thermodynamic properties of QCD on the number of quark flavours is investigated. Lattice results for the equation of state are presented for 2, 2+1 and 3 quark flavours. The simulations have been performed with the improved p4-staggered fermion and a Symanzik improved gluon action on lattices of size 16 3 × 4 and 16 4 .