Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Propagating stress waves during epithelial expansion   Coordinated motion of cell monolayers during epithelial wound healing and
tissue morphogenesis involves mechanical stress generation. Here we propose a
model for the dynamics of epithelial expansion that couples mechanical
deformations in the tissue to contractile activity and polarization in the
cells. A new ingredient of our model is a feedback between local strain,
polarization and contractility that naturally yields a mechanism for
viscoelasticity and effective inertia in the cell monolayer. Using a
combination of analytical and numerical techniques, we demonstrate that our
model quantitatively reproduces many experimental findings [Nat. Phys. 8, 628
(2012)], including the build-up of intercellular stresses, and the existence of
traveling mechanical waves guiding the oscillatory monolayer expansion.

2
The categories of this paper are: math
19
The categories of this paper are: eess
24
The categories of this paper are: dg-ga
7
The categories of this paper are: hep-th
31
The categories of this paper are: ao-sci
34
The categories of this paper are: chem-ph
0
The categories of this paper are: hep-ph
12
The categories of this paper are: nucl-th
27
The categories of this paper are: comp-gas
5
The categories of this paper are: gr-qc
30
The categories of this paper are: q-alg
15
The categories of this paper are: nucl-ex
23
The categories of this paper are: solv-int
21
The categories of this paper are: adap-org
28
The categories of this paper are: alg-geom
22
The categories of this paper are: chao-dyn