ar X iv : c on d - m at / 9 80 71 98 v 1 1 4 Ju l 1 99 8 Temperature dependent surface relaxations of Ag ( 111 )

ar X iv : c on d - m at / 9 50 80 62 v 1 3 1 Ju l 1 99 5 QUANTUM THEORY OF LARGE SYSTEMS OF NON - RELATIVISTIC MATTER

ar X iv : c on d - m at / 9 20 70 23 v 1 2 0 Ju l 1 99 2 Melting a copper cluster : Critical droplet theory

We simulate the melting of a 71 Å diameter cluster of Cu. At low temperatures the crystal exhibits facets. With increasing temperatures the open facets pre–melt, the melted regions coalesce into a liquid envelope containing a crystalline nucleus, and the nucleus finally goes unstable to the supercooled liquid. Using critical droplet theory and experimental data for Cu, we explain the thermodyna...

ar X iv : c on d - m at / 9 60 71 10 v 1 1 6 Ju l 1 99 6 Casimir effect around a screw dislocation

In this work, it is shown that a non-zero vacuum energy density (the Casimir energy) for a scalar field appears in a continuous elastic solid due to the presence of a topological defect, the screw dislocation. An exact expression is obtained for this energy density in terms of the Burgers vector describing the defect, for zero and finite temperature.

ar X iv : h ep - l at / 9 80 70 28 v 1 1 1 Ju l 1 99 8 COURSE INTRODUCTION TO LATTICE QCD

ar X iv : c on d - m at / 9 80 71 81 v 1 1 3 Ju l 1 99 8 Deep Level Promotion Mechanism in Sputtering ∗

We have applied a double decoupled localized level Anderson-Newns Hamilto-nian to the analysis of surface effects upon the ionized fraction R + of sputtered atoms from a metal surface. Electronic excitations, induced in the conduction band by the transient formation of Quasi Molecules, in the collision cascade generated by primary incident ions, have been explicitly included into an instantaneo...