ar X iv : c on d - m at / 9 60 90 32 v 1 3 S ep 1 99 6 Mode damping in a commensurate monolayer solid

ar X iv : c on d - m at / 9 60 31 90 v 1 2 9 M ar 1 99 6 The Four - Dimensional XY Spin Glass

ar X iv : h ep - l at / 9 60 90 06 v 1 3 1 A ug 1 99 6 1

We present results of a study of BK using tadpole improved gauge-invariant staggered operators. Using three ensembles of 16 3 × 32 configurations with varying numbers of dynamical flavors, we observe a small dependence on N f. Using 7 quenched ensembles at different values of β, we extrapolate to a = 0.

ar X iv : c on d - m at / 9 60 90 54 v 1 5 S ep 1 99 6 Cumulant Expansions and the Spin - Boson Problem ∗

The dynamics of the dissipative two-level system at zero temperature is studied using three different cumulant expansion techniques. The relative merits and drawbacks of each technique are discussed. It is found that a new technique, the non-crossing cumulant expansion, appears to embody the virtues of the more standard cumulant methods. PACS-number(s): 05.30.-d, 05.40.+j, 72.15.Qm submitted to...

ar X iv : h ep - l at / 9 60 90 13 v 1 3 S ep 1 99 6 1

We present an exact local bosonic algorithm for the simulation of dynamical fermions in lattice QCD. We show that this algorithm is a viable alternative to the Hybrid Monte Carlo algorithm.

ar X iv : h ep - l at / 9 60 80 69 v 1 1 3 A ug 1 99 6 1 Calculation of Moments of Nucleon Structure Functions ∗

Preliminary results are presented in our program to calculate low moments of structure functions for the proton and neutron on a 24 3 × 32 lattice at β = 6.2. A comparison is made for a variety of smeared nucleon sources and preliminary results for the calculation of the nucleon tensor charge are presented.