Theoretical physics deals with physical models. The main requirements for a good physical
model are simplicity and universality. Universal models which can be applied to describe a …

Structural superlubricity describes the state of virtually frictionless sliding if two atomically flat
interfaces are incommensurate, that is, they share no common periodicity. Despite the …

The nonlinear dynamics associated with sliding friction forms a broad interdisciplinary
research field that involves complex dynamical processes and patterns covering a broad …

The highly nonlinear many-body physics of a chain of mutually interacting atoms in contact
with a periodic substrate gives rise to complex static and dynamical phenomena, such as …

Sliding friction between crystal lattices and the physics of cold ion traps are so far non-
overlapping fields. Two sliding lattices may either stick and show static friction or slip with …

A nonlinear eigenvalue equation whose solution is an ''effective potential''is used to study
the ground states of one-dimensional systems (such as the Frenkel-Kontorova model) …

The stick-slip phenomenon, at the basis of friction, is crucial for several applications ranging
from nanotechnology and biophysics to mechanics and geology. Deep understanding of …

Friction in ordered atomistic layers plays a central role in various nanoscale systems ranging
from nanomachines to biological systems. It governs transport properties, wear and …

We investigate experimentally and theoretically nondegenerate four-wave mixing in
rubidium vapor using a diamond configuration (5 S 1/2, 5 P 1/2, 5 P 3/2, and 6 S 1/2 levels) …

Physics is living an era of unprecedented cross-fertilization among the different areas of
science. In this perspective review, we discuss the manifold impact that state-of-the-art cold …