Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Collective Motion   With the aim of understanding the emergence of collective motion from local
interactions of organisms in a "noisy" environment, we study biologically
inspired, inherently non-equilibrium models consisting of self-propelled
particles. In these models particles interact with their neighbors by turning
towards the local average direction of motion. In the limit of vanishing
velocities this behavior results in a dynamics analogous to some Monte Carlo
realization of equilibrium ferromagnets. However, numerical simulations
indicate the existence of new types of phase transitions which are not present
in the corresponding ferromagnets. In particular, here we demonstrate both
numerically and analytically that even in certain one dimensional
self-propelled particle systems an ordered phase exists for finite noise
levels.

20
The categories of this paper are: acc-phys
14
The categories of this paper are: math-ph
24
The categories of this paper are: dg-ga
7
The categories of this paper are: hep-th
27
The categories of this paper are: comp-gas
36
The categories of this paper are: cmp-lg
0
The categories of this paper are: hep-ph
23
The categories of this paper are: solv-int
29
The categories of this paper are: funct-an
18
The categories of this paper are: econ
21
The categories of this paper are: adap-org
16
The categories of this paper are: stat
35
The categories of this paper are: mtrl-th
5
The categories of this paper are: gr-qc
1
The categories of this paper are: cs
34
The categories of this paper are: chem-ph