Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Heterogeneous bacterial swarms with mixed lengths   Heterogeneous systems of active matter exhibit a range of complex emergent
dynamical patterns. In particular, it is difficult to predict the properties of
the mixed system based on its constituents. These considerations are
particularly significant for understanding realistic bacterial swarms, which
typically develop heterogeneities even when grown from a single cell. Here,
mixed swarms of cells with different aspect ratios are studied both
experimentally and in simulations. In contrast with previous theory, there is
no macroscopic phase segregation. However, locally, long cells act as
nucleation cites, around which ordered clusters of short, rapidly moving cells
can form, resulting in enhanced swarming speeds. On the other hand, high
fractions of long cells form a bottle-neck for efficient swarming. Our results
suggest a new physical advantage for the spontaneous heterogeneity of bacterial
swarm populations.

29
The categories of this paper are: funct-an
21
The categories of this paper are: adap-org
28
The categories of this paper are: alg-geom
0
The categories of this paper are: hep-ph
14
The categories of this paper are: math-ph
23
The categories of this paper are: solv-int
22
The categories of this paper are: chao-dyn
31
The categories of this paper are: ao-sci
25
The categories of this paper are: patt-sol
37
The categories of this paper are: supr-con
26
The categories of this paper are: bayes-an
19
The categories of this paper are: eess
7
The categories of this paper are: hep-th
27
The categories of this paper are: comp-gas
9
The categories of this paper are: nlin
18
The categories of this paper are: econ