Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Dynamics of a microorganism moving by chemotaxis in its own secretion   The Brownian dynamics of a single microorganism coupled by chemotaxis to a
diffusing concentration field which is secreted by the microorganism itself is
studied by computer simulations in spatial dimensions $d=1,2,3$. Both cases of
a chemoattractant and a chemorepellent are discussed. For a chemoattractant, we
find a transient dynamical arrest until the microorganism diffuses for long
times. For a chemorepellent, there is a transient ballistic motion in all
dimensions and a long-time diffusion. These results are interpreted with the
help of a theoretical analysis.

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The categories of this paper are: mtrl-th
5
The categories of this paper are: gr-qc
9
The categories of this paper are: nlin
1
The categories of this paper are: cs
21
The categories of this paper are: adap-org
24
The categories of this paper are: dg-ga
31
The categories of this paper are: ao-sci
30
The categories of this paper are: q-alg
19
The categories of this paper are: eess
22
The categories of this paper are: chao-dyn
2
The categories of this paper are: math
16
The categories of this paper are: stat
0
The categories of this paper are: hep-ph
18
The categories of this paper are: econ
25
The categories of this paper are: patt-sol
13
The categories of this paper are: quant-ph