Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Intrinsic decoherence in isolated quantum systems   We study the intrinsic, disorder-induced decoherence of an isolated quantum
system under its own dynamics. Specifically, we investigate the characteristic
time scale (i.e., the decoherence time) associated with an interacting
many-body system losing the memory of its initial state. To characterize the
erasure of the initial state memory, we define a time scale, the intrinsic
decoherence time, by thresholding the gradual decay of the disorder-averaged
return probability. We demonstrate the system-size independence of the
intrinsic decoherence time in different models, and we study its dependence on
the disorder strength. We find that the intrinsic decoherence time increases
monotonically as the disorder strength increases in accordance with the
relaxation of locally measurable quantities. We investigate several interacting
spin (e.g., Ising and Heisenberg) and fermion (e.g., Anderson and
Aubry-Andr\'e) models to obtain the intrinsic decoherence time as a function of
disorder and interaction strength.

18
The categories of this paper are: econ
21
The categories of this paper are: adap-org
29
The categories of this paper are: funct-an
16
The categories of this paper are: stat
7
The categories of this paper are: hep-th
30
The categories of this paper are: q-alg
37
The categories of this paper are: supr-con
27
The categories of this paper are: comp-gas
9
The categories of this paper are: nlin
17
The categories of this paper are: q-fin
32
The categories of this paper are: atom-ph
22
The categories of this paper are: chao-dyn
5
The categories of this paper are: gr-qc
2
The categories of this paper are: math
1
The categories of this paper are: cs
26
The categories of this paper are: bayes-an