Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Random walk of passive tracers among randomly moving obstacles   Background: This study is mainly motivated by the need of understanding how
the diffusion behaviour of a biomolecule (or even of a larger object) is
affected by other moving macromolecules, organelles, and so on, inside a living
cell, whence the possibility of understanding whether or not a randomly walking
biomolecule is also subject to a long-range force field driving it to its
target. Method: By means of the Continuous Time Random Walk (CTRW) technique
the topic of random walk in random environment is here considered in the case
of a passively diffusing particle in a crowded environment made of randomly
moving and interacting obstacles. Results: The relevant physical quantity which
is worked out is the diffusion cofficient of the passive tracer which is
computed as a function of the average inter-obstacles distance. Coclusions: The
results reported here suggest that if a biomolecule, let us call it a test
molecule, moves towards its target in the presence of other independently
interacting molecules, its motion can be considerably slowed down. Hence, if
such a slowing down could compromise the efficiency of the task to be performed
by the test molecule, some accelerating factor would be required.
Intermolecular electrodynamic forces are good candidates as accelerating
factors because they can act at a long distance in a medium like the cytosol
despite its ionic strength.

26
The categories of this paper are: bayes-an
25
The categories of this paper are: patt-sol
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The categories of this paper are: comp-gas
29
The categories of this paper are: funct-an
1
The categories of this paper are: cs
19
The categories of this paper are: eess
14
The categories of this paper are: math-ph
8
The categories of this paper are: hep-ex
20
The categories of this paper are: acc-phys
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The categories of this paper are: solv-int
0
The categories of this paper are: hep-ph
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The categories of this paper are: alg-geom
9
The categories of this paper are: nlin
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The categories of this paper are: stat
12
The categories of this paper are: nucl-th
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The categories of this paper are: chem-ph