Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Minimal model of cellular symmetry breaking   The cell cortex, a thin film of active material assembled below the cell
membrane, plays a key role in cellular symmetry breaking processes such as cell
polarity establishment and cell division. Here, we present a minimal model of
the self-organization of the cell cortex that is based on a hydrodynamic theory
of curved active surfaces. Active stresses on this surface are regulated by a
diffusing molecular species. We show that coupling of the active surface to a
passive bulk fluid enables spontaneous polarization and the formation of a
contractile ring on the surface via mechano-chemical instabilities. We discuss
the role of external fields in guiding such pattern formation. Our work reveals
that key features of cellular symmetry breaking and cell division can emerge in
a minimal model via general dynamic instabilities.

13
The categories of this paper are: quant-ph
27
The categories of this paper are: comp-gas
37
The categories of this paper are: supr-con
2
The categories of this paper are: math
24
The categories of this paper are: dg-ga
8
The categories of this paper are: hep-ex
5
The categories of this paper are: gr-qc
22
The categories of this paper are: chao-dyn
0
The categories of this paper are: hep-ph
21
The categories of this paper are: adap-org
16
The categories of this paper are: stat
14
The categories of this paper are: math-ph
18
The categories of this paper are: econ
28
The categories of this paper are: alg-geom
9
The categories of this paper are: nlin
12
The categories of this paper are: nucl-th