Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Universal space-time scaling symmetry in the dynamics of bosons across a
  quantum phase transition   The dynamics of many-body systems spanning condensed matter, cosmology, and
beyond is hypothesized to be universal when the systems cross continuous phase
transitions. The universal dynamics is expected to satisfy a scaling symmetry
of space and time with the crossing rate, inspired by the Kibble-Zurek
mechanism. We test this symmetry based on Bose condensates in a shaken optical
lattice. Shaking the lattice drives condensates across an effectively
ferromagnetic quantum phase transition. After crossing the critical point, the
condensates manifest delayed growth of spin fluctuations and develop
anti-ferromagnetic spatial correlations resulting from sub-Poisson generation
of topological defects. The characteristic times and lengths scale as
power-laws of the crossing rate, yielding the temporal exponent 0.50(2) and the
spatial exponent 0.26(2), consistent with theory. Furthermore, the fluctuations
and correlations are invariant in scaled space-time coordinates, in support of
the scaling symmetry of quantum critical dynamics.

23
The categories of this paper are: solv-int
6
The categories of this paper are: astro-ph
21
The categories of this paper are: adap-org
20
The categories of this paper are: acc-phys
33
The categories of this paper are: plasm-ph
32
The categories of this paper are: atom-ph
31
The categories of this paper are: ao-sci
27
The categories of this paper are: comp-gas
8
The categories of this paper are: hep-ex
24
The categories of this paper are: dg-ga
7
The categories of this paper are: hep-th
36
The categories of this paper are: cmp-lg
17
The categories of this paper are: q-fin
30
The categories of this paper are: q-alg
34
The categories of this paper are: chem-ph
37
The categories of this paper are: supr-con