Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Origin of the Fragile-to-Strong Crossover in Liquid Silica as
  Expressed by its Potential Energy Landscape   The origin of the fragile-to-strong crossover in liquid silica is
characterized in terms of properties of the potential energy landscape (PEL).
Using the standard BKS model of silica we observe a low-energy cutoff of the
PEL. It is shown that this feature of the PEL is responsible for the occurrence
of the fragile-to-strong crossover and may also explain the avoidance of the
Kauzmann paradox. The number of defects, i.e. deviations from the ideal
tetrahedral structure, vanishes for configurations with energies close to this
cutoff. This suggests a structural reason for this cutoff.

30
The categories of this paper are: q-alg
35
The categories of this paper are: mtrl-th
6
The categories of this paper are: astro-ph
37
The categories of this paper are: supr-con
33
The categories of this paper are: plasm-ph
1
The categories of this paper are: cs
22
The categories of this paper are: chao-dyn
32
The categories of this paper are: atom-ph
15
The categories of this paper are: nucl-ex
27
The categories of this paper are: comp-gas
28
The categories of this paper are: alg-geom
23
The categories of this paper are: solv-int
3
The categories of this paper are: physics
36
The categories of this paper are: cmp-lg
16
The categories of this paper are: stat
5
The categories of this paper are: gr-qc