Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Tomlinson model improved with no ad-hoc dissipation   The origin of friction force is a very old problem in physics, which goes
back to Leonardo da Vinci or even older times. Extremely important from a
practical point of view, but with no satisfactory explanation yet. Many models
have been used to study dry sliding friction. The model introduced in the
present work consists in one atom that slide over a surface represented by a
periodic arrangement of atoms, each confined by an independent harmonic
potential. The novelty of our contribution resides in that we do not include an
{\em ad hoc} dissipation term as all previous works have done. Despite the
apparent simplicity of the model it can not be solved analytically, so the
study is performed solving the Newton's equations numerically. The results
obtained so far with the present model are in accordance with the Tomlinson
model, often used to represent the atomic force microscope. The atomic-scale
analysis of the interaction between sliding surfaces is necessary to understand
the non-conservative lateral forces and the mechanism of energy dissipation
which can be thought as effective emerging friction.

25
The categories of this paper are: patt-sol
3
The categories of this paper are: physics
27
The categories of this paper are: comp-gas
7
The categories of this paper are: hep-th
1
The categories of this paper are: cs
8
The categories of this paper are: hep-ex
35
The categories of this paper are: mtrl-th
14
The categories of this paper are: math-ph
30
The categories of this paper are: q-alg
12
The categories of this paper are: nucl-th
16
The categories of this paper are: stat
18
The categories of this paper are: econ
15
The categories of this paper are: nucl-ex
32
The categories of this paper are: atom-ph
9
The categories of this paper are: nlin
17
The categories of this paper are: q-fin