l - th / 0 50 90 03 v 1 1 S ep 2 00 5 X ( 5 ) Critical - Point Structure in a Finite System

ar X iv : n uc l - th / 0 00 90 41 v 1 1 5 Se p 20 00 CRITICAL PHENOMENA IN FINITE SYSTEMS

We discuss the dynamics of finite systems within molecular dynamics models. Signatures of a critical behavior are analyzed and compared to experimental data both in nucleus-nucleus and metallic cluster collisions. We suggest the possibility to explore the instability region via tunneling. In this way we can obtain fragments at very low temperatures and densities. We call these fragments quantum...

ar X iv : n uc l - th / 0 50 40 62 v 1 2 1 A pr 2 00 5 1 Structure of 8 B and astrophysical S 17 factor

ar X iv : h ep - l at / 0 21 00 10 v 1 7 O ct 2 00 2 1 Compact QED under scrutiny : it ’ s first order

We report new results from our finite size scaling analysis of 4d compact pure U(1) gauge theory with Wilson action. Investigating several cumulants of the plaquette energy within the Borgs-Kotecky finite size scaling scheme we find strong evidence for a first-order phase transition and present a high precision value for the critical coupling, βT in the thermodynamic limit.

ar X iv : h ep - l at / 0 20 90 72 v 1 5 S ep 2 00 2 1 Four – loop logarithms in 3 d gauge + Higgs theory ∗

We discuss the logarithmic contributions to the vacuum energy density of the three-dimensional SU(3) + adjoint Higgs theory in its symmetric phase, and relate them to numerical Monte Carlo simulations. We also comment on the implications of these results for perturbative and non-perturbative determinations of the pressure of finite-temperature QCD.

ar X iv : h ep - l at / 0 20 90 56 v 1 4 S ep 2 00 2 1 I = 2 Pion Scattering Phase Shift with Wilson Fermions ∗

We present results of phase shift for I = 2 S-wave ππ system with the Wilson fermions in the quenched approximation. The finite size method proposed by Lüscher is employed, and calculations are carried out at