The properties of spinors and vectors in (2 + 2) space split quaternions are studied. Quaternionic representation rotations naturally separates two SO(2,1) subgroups the full group symmetry norms quaternions, SO(2,2). One them represents symmetries three-dimensional Minkowski space-time. Then, second subgroup, generated by additional time-like coordinate from basis can be viewed as internal mod...

New sharp Strichartz estimates for the Maxwell system in two dimensions with rough permittivity and non-trivial charges are proved. We use FBI transform to carry out analysis phase space. For this purpose, equations conjugated a of half-wave coefficients. system, similarly derived as previous work by Tataru on scalar wave improve local well-posedness theory quasilinear dimensions.

We show that localized (nonevanescent) solutions to Maxwell equations exist, which propagate without distortion along normal waveguides with superluminal speed.

Selfand binary Maxwell-Stefan diffusion coefficients were determined by equilibrium molecular dynamics simulations with the Green-Kubo method. This study covers selfdiffusion coefficients at liquid states for eight pure fluids, i.e. F2, N2, CO2, CS2, C2H6, C2H4, C2H2 and SF6 as well as Maxwell-Stefan diffusion coefficients for three binary mixtures N2+CO2, N2+C2H6 and CO2+C2H6. The fluids were ...