Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Self-induced emergence of consensus in social networks: Reddit and the
  GameStop short squeeze   The short squeeze of GameStop (GME) shares in mid-January 2021, primarily
orchestrated by retail investors of the Reddit r/wallstreetbets community,
represents a paramount example of collective coordination action on social
media, resulting in large-scale consensus formation and significant market
impact. In this work we characterise the structure and time evolution of Reddit
conversation data, showing that the occurrence and sentiment of GME-related
comments (representing how much users are engaged with GME) increased
significantly much before the short squeeze actually took place. We then
introduce a model of opinion dynamics where user engagement can trigger a
self-reinforcing mechanism leading to the emergence of consensus on the short
squeeze operation. We observe a clear phase transition from heterogeneous to
homogeneous opinions as engagement grows, with the presence of hubs easing the
formation of diffuse consensus. Our results shed light on the increasingly
important phenomenon of self-organized collective actions taking place on
social networks.

5
The categories of this paper are: gr-qc
30
The categories of this paper are: q-alg
34
The categories of this paper are: chem-ph
20
The categories of this paper are: acc-phys
36
The categories of this paper are: cmp-lg
32
The categories of this paper are: atom-ph
29
The categories of this paper are: funct-an
25
The categories of this paper are: patt-sol
28
The categories of this paper are: alg-geom
16
The categories of this paper are: stat
2
The categories of this paper are: math
0
The categories of this paper are: hep-ph
27
The categories of this paper are: comp-gas
15
The categories of this paper are: nucl-ex
12
The categories of this paper are: nucl-th
8
The categories of this paper are: hep-ex