Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Impact of dipole-dipole interactions on motility-induced phase
  separation   We present a hydrodynamic theory for systems of dipolar active Brownian
particles which, in the regime of weak dipolar coupling, predicts the onset of
motility-induced phase separation (MIPS), consistent with Brownian dynamics
(BD) simulations. The hydrodynamic equations are derived by explicitly
coarse-graining the microscopic Langevin dynamics, thus allowing for a
quantitative comparison of parameters entering the coarse-grained model and
particle-resolved simulations. Performing BD simulations at fixed density, we
find that dipolar interactions tend to hinder MIPS, as first reported in [Liao
et al., Soft Matter, 2020, 16, 2208]. Here we demonstrate that the theoretical
approach indeed captures the suppression of MIPS. Moreover, the analysis of the
numerically obtained, angle-dependent correlation functions sheds light into
the underlying microscopic mechanisms leading to the destabilization of the
homogeneous phase.

35
The categories of this paper are: mtrl-th
30
The categories of this paper are: q-alg
22
The categories of this paper are: chao-dyn
23
The categories of this paper are: solv-int
32
The categories of this paper are: atom-ph
25
The categories of this paper are: patt-sol
31
The categories of this paper are: ao-sci
1
The categories of this paper are: cs
33
The categories of this paper are: plasm-ph
8
The categories of this paper are: hep-ex
10
The categories of this paper are: q-bio
16
The categories of this paper are: stat
3
The categories of this paper are: physics
36
The categories of this paper are: cmp-lg
7
The categories of this paper are: hep-th
5
The categories of this paper are: gr-qc