Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Spontaneous symmetry breaking in a driven-dissipative system   Spontaneous symmetry breaking (SSB) is a key concept in physics that for
decades has played a crucial role in the description of many physical phenomena
in a large number of different areas, like particle physics, cosmology, and
condensed-matter physics. SSB is thus an ubiquitous concept connecting several,
both "high" and "low" energy, areas of physics and many textbooks describe its
basic features in great detail. However, to study the dynamics of symmetry
breaking in the laboratory is extremely difficult. In condensed-matter physics,
for example, tiny external disturbances cause a preference for the breaking of
the symmetry in a particular configuration and typically those disturbances
cannot be avoided in experiments. Notwithstanding these complications, here we
describe an experiment, in which we directly observe the spontaneous breaking
of the temporal phase of a driven system with respect to the drive into two
distinct values differing by $\pi$.

16
The categories of this paper are: stat
3
The categories of this paper are: physics
34
The categories of this paper are: chem-ph
7
The categories of this paper are: hep-th
8
The categories of this paper are: hep-ex
35
The categories of this paper are: mtrl-th
18
The categories of this paper are: econ
37
The categories of this paper are: supr-con
1
The categories of this paper are: cs
28
The categories of this paper are: alg-geom
31
The categories of this paper are: ao-sci
33
The categories of this paper are: plasm-ph
19
The categories of this paper are: eess
23
The categories of this paper are: solv-int
12
The categories of this paper are: nucl-th
13
The categories of this paper are: quant-ph