Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Relaxation in a Phase-separating Two-dimensional Active Matter System
  with Alignment Interaction   Via computer simulations we study kinetics of pattern formation in a
two-dimensional active matter system. Self-propulsion in our model is
incorporated via the Vicsek-like activity, i.e., particles have the tendency of
aligning their velocities with the average directions of motion of their
neighbors. In addition to this dynamic or active interaction, there exists
passive inter-particle interaction in the model for which we have chosen the
standard Lennard-Jones form. Following quenches of homogeneous configurations
to a point deep inside the region of coexistence between high and low density
phases, as the systems exhibit formation and evolution of particle-rich
clusters, we investigate properties related to the morphology, growth and
aging. A focus of our study is on the understanding of the effects of structure
on growth and aging. To quantify the latter we use the two-time order-parameter
autocorrelation function. This correlation, as well as the growth, is observed
to follow power-law time dependence, qualitatively similar to the scaling
behavior reported for passive systems. The values of the exponents have been
estimated and discussed by comparing with the previously obtained numbers for
other dimensions as well as with the new results for the passive limit of the
considered model. We have also presented results on the effects of temperature
on the activity mediated phase separation.

21
The categories of this paper are: adap-org
16
The categories of this paper are: stat
33
The categories of this paper are: plasm-ph
34
The categories of this paper are: chem-ph
14
The categories of this paper are: math-ph
24
The categories of this paper are: dg-ga
10
The categories of this paper are: q-bio
2
The categories of this paper are: math
28
The categories of this paper are: alg-geom
25
The categories of this paper are: patt-sol
36
The categories of this paper are: cmp-lg
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The categories of this paper are: chao-dyn
5
The categories of this paper are: gr-qc
3
The categories of this paper are: physics
29
The categories of this paper are: funct-an
18
The categories of this paper are: econ