Multipole moments carry a lot of information about the gravitational field. Nonetheless, knowing all multipole an object does not determine conclusively nature itself. In particular, field Kerr spacetime are unique. Here we construct several physically motivated Newtonian objects with identical to those Kerr. Moreover, also provide description how include post-Newtonian corrections these withou...

The first six even moments of the displacement of a molecule in water and an atom in liquid argon are found by molecular dynamics simulations and compared with the moments predicted by diffusion theory. We find a noticeable difference between the moments higher than the second. The ratio between predicted and calculated moments approaches unity as 1/t for times larger than 10 ps. Continuous tim...