ar X iv : c on d - m at / 9 70 91 11 v 1 9 S ep 1 99 7 Specific Heat of defects in the Haldane System

ar X iv : h ep - l at / 9 70 50 11 v 1 7 M ay 1 99 7 BRIEF REVIEW OF MULTICANONICAL SIMULATIONS a

Recent progress of simulations with non-canonical weights is summarized.

ar X iv : c on d - m at / 9 90 90 44 v 1 3 S ep 1 99 9 Systematic low temperature expansion in Ginzburg - Landau model

Consistent perturbation theory for thermodynamical quantities in strongly type II superconductors in magnetic field at low temperatures is developed. It is complementary to the existing expansion valid at high temperatures. Magnetization and specific heat are calculated to two loop order and compare well with existing Monte Carlo simulations, other theories and experiments. Typeset using REVTEX 1

ar X iv : h ep - l at / 9 70 90 10 v 1 5 S ep 1 99 7 1 HUPD - 9715 NRQCD Results on Form Factors ∗

We report results on fB and semi-leptonic B decay form factors using NRQCD. We investigate 1/M scaling behavior of decay amplitudes. For fB Effect of higher order relativistic correction terms are also studied.

ar X iv : c on d - m at / 9 80 91 03 v 1 7 S ep 1 99 8 Cannon for Neutral Particles

Dynamics of spin–polarized neutral particles, such as neutrons or neutral atoms and molecules, in magnetic fields is studied. A new regime of motion is found where particles move mainly in one direction forming a well–collimated beam. This regime suggests a mechanism for creating devices emitting directed beams of neutral particles.

ar X iv : q - a lg / 9 70 90 01 v 1 1 S ep 1 99 7 Bilinear identity for q - hypergeometric integrals