Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Signatures of many-body localization and metastability by weak
  perturbation   Nonequilibrium dynamics in isolated quantum many-body systems displays a
number of intriguing features, such as many-body localization (MBL) and
prethermalization. Here we investigate a simple ladder system with disorder, in
which various distinct dynamical features coexist and interplay. By exact
diagonalization, we demonstrate that the system exhibits the signatures of an
MBL-ergodic-MBL reentrant transition, metastability, and disorder-free MBL. We
give an account of these properties by introducing a quasi-particle picture and
interpreting the quasi-vacuum energy fluctuation as an effective disorder on
the quasi-particle dynamics. It is speculated that the weak perturbation
behavior is a finite-size effect, but its relaxation time scale increases with
the system size.

7
The categories of this paper are: hep-th
36
The categories of this paper are: cmp-lg
9
The categories of this paper are: nlin
12
The categories of this paper are: nucl-th
32
The categories of this paper are: atom-ph
33
The categories of this paper are: plasm-ph
37
The categories of this paper are: supr-con
26
The categories of this paper are: bayes-an
23
The categories of this paper are: solv-int
5
The categories of this paper are: gr-qc
31
The categories of this paper are: ao-sci
20
The categories of this paper are: acc-phys
0
The categories of this paper are: hep-ph
10
The categories of this paper are: q-bio
2
The categories of this paper are: math
35
The categories of this paper are: mtrl-th