Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Extended nonergodic regime and spin subdiffusion in disordered
  SU(2)-symmetric Floquet systems   We explore thermalization and quantum dynamics in a one-dimensional
disordered SU(2)-symmetric Floquet model, where a many-body localized phase is
prohibited by the non-abelian symmetry. Despite the absence of localization, we
find an extended nonergodic regime at strong disorder where the system exhibits
nonthermal behaviors. In the strong disorder regime, the level spacing
statistics exhibit neither a Wigner-Dyson nor a Poisson distribution, and the
spectral form factor does not show a linear-in-time growth at early times
characteristic of random matrix theory. The average entanglement entropy of the
Floquet eigenstates is subthermal, although violating an area-law scaling with
system sizes. We further compute the expectation value of local observables and
find strong deviations from the eigenstate thermalization hypothesis. The
infinite temperature spin autocorrelation function decays at long times as
$t^{-\beta}$ with $\beta < 0.5$, indicating subdiffusive transport at strong
disorders.

2
The categories of this paper are: math
14
The categories of this paper are: math-ph
15
The categories of this paper are: nucl-ex
33
The categories of this paper are: plasm-ph
7
The categories of this paper are: hep-th
27
The categories of this paper are: comp-gas
32
The categories of this paper are: atom-ph
25
The categories of this paper are: patt-sol
23
The categories of this paper are: solv-int
35
The categories of this paper are: mtrl-th
11
The categories of this paper are: hep-lat
34
The categories of this paper are: chem-ph
28
The categories of this paper are: alg-geom
37
The categories of this paper are: supr-con
8
The categories of this paper are: hep-ex
20
The categories of this paper are: acc-phys