Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Scaling of the fidelity susceptibility in a disordered quantum spin
  chain   The phase diagram of a quantum XY spin chain with Gaussian-distributed random
anisotropies and transverse fields is investigated, with focus on the fidelity
susceptibility, a recently introduced quantum information theoretical measure.
Monitoring the finite-size scaling of the probability distribution of this
quantity as well as its average and typical values, we detect a
disorder-induced disappearance of criticality and the emergence of Griffiths
phases in this model. It is found that the fidelity susceptibility is not
self-averaging near the disorder-free quantum critical lines. At the Ising
critical point the fidelity susceptibility scales as a disorder-strength
independent stretched exponential of the system size, in contrast with the
quadratic scaling at the corresponding point in the disorder-free XY chain.
Along the line where the average anisotropy vanishes the fidelity
susceptibility appears to scale extensively, whereas in the disorder-free case
this point is quantum critical with quadratic finite-size scaling.

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The categories of this paper are: dg-ga
16
The categories of this paper are: stat
4
The categories of this paper are: cond-mat
23
The categories of this paper are: solv-int
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The categories of this paper are: chem-ph
29
The categories of this paper are: funct-an
9
The categories of this paper are: nlin
21
The categories of this paper are: adap-org
1
The categories of this paper are: cs
15
The categories of this paper are: nucl-ex
30
The categories of this paper are: q-alg
5
The categories of this paper are: gr-qc
6
The categories of this paper are: astro-ph
28
The categories of this paper are: alg-geom
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The categories of this paper are: comp-gas
32
The categories of this paper are: atom-ph