X iv : c on d - m at / 9 60 70 78 v 1 1 1 Ju l 1 99 6 Front localization in a ballistic annihilation model . Pierre - Antoine Rey and Michel Droz

ar X iv : c on d - m at / 9 20 70 15 v 1 1 5 Ju l 1 99 2 Fast - diffusion mean - field theory for k - body reactions in one dimension

We derive an improved mean-field approximation for k-body annihilation reactions kA → inert, for hard-core diffusing particles on a line, annihilating in groups of k neighbors with probability 0 < q ≤ 1. The hopping and annihilation processes are correlated to mimic chemical reactions. Our new mean-field theory accounts for hardcore particle properties and has a larger region of applicability t...

ar X iv : c on d - m at / 9 41 20 99 v 1 2 1 D ec 1 99 4 Ballistic annihilation kinetics for a multi - velocity one - dimensional ideal gas .

Ballistic annihilation kinetics for a multi-velocity one-dimensional ideal gas is studied in the framework of an exact analytic approach. For an initial symmetric three-velocity distribution, the problem can be solved exactly and it is shown that different regimes exist depending on the initial fraction of particles at rest. Extension to the case of a n-velocity distribution is discussed. PACS ...

ar X iv : h ep - l at / 9 60 70 64 v 1 2 6 Ju l 1 99 6

We present results from magnetic monopoles in SU (2) lattice gauge theory at finite temperature. The lattices are 16 3 × N t , for N t = 4, 6, 8, 12, at β = 2.5115. Quantities discussed are: the spacial string tension, Polyakov loops, and the screening of timelike and spacelike magnetic currents.

ar X iv : q - a lg / 9 60 70 28 v 1 2 7 Ju l 1 99 6 Examples of Categorification

ar X iv : c on d - m at / 9 60 30 23 v 1 4 M ar 1 99 6 Few interacting particles in a random potential

We study the localization length of few interacting particles in a random potential. Concentrating on the case of three particles we show that their localization length is strongly enhanced comparing to the enhancement for two interacting particles.