Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Polar Fluctuations Lead to Extensile Nematic Behavior in Confluent
  Tissues   How can a collection of motile cells, each generating contractile nematic
stresses in isolation, become an extensile nematic at the tissue-level?
Understanding this seemingly contradictory experimental observation, which
occurs irrespective of whether the tissue is in the liquid or solid states, is
not only crucial to our understanding of diverse biological processes, but is
also of fundamental interest to soft matter and many-body physics. Here, we
resolve this cellular to tissue level disconnect in the small fluctuation
regime by using analytical theories based on hydrodynamic descriptions of
confluent tissues, in both liquid and solid states. Specifically, we show that
a collection of microscopic constituents with no inherently nematic extensile
forces can exhibit active extensile nematic behavior when subject to polar
fluctuating forces. We further support our findings by performing cell level
simulations of minimal models of confluent tissues.

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The categories of this paper are: supr-con
14
The categories of this paper are: math-ph
17
The categories of this paper are: q-fin
1
The categories of this paper are: cs
7
The categories of this paper are: hep-th
28
The categories of this paper are: alg-geom
19
The categories of this paper are: eess
35
The categories of this paper are: mtrl-th
30
The categories of this paper are: q-alg
34
The categories of this paper are: chem-ph
23
The categories of this paper are: solv-int
32
The categories of this paper are: atom-ph
36
The categories of this paper are: cmp-lg
25
The categories of this paper are: patt-sol
15
The categories of this paper are: nucl-ex
0
The categories of this paper are: hep-ph