Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Unexpected Phenomenology in Particle-Based Ice Absent in Magnetic Spin
  Ice   While particle-based ices are often considered essentially equivalent to
magnet-based spin ices, the two differ essentially in frustration and
energetics. We show that at equilibrium particle-based ices correspond exactly
to spin ices coupled to a background field. In trivial geometries, such a field
has no effect, and the two systems are indeed thermodynamically equivalent. In
other cases, however, the field controls a richer phenomenology, absent in
magnetic ices, and still largely unexplored: ice rule fragility, topological
charge transfer, radial polarization, decimation induced disorder, and
glassiness.

33
The categories of this paper are: plasm-ph
12
The categories of this paper are: nucl-th
34
The categories of this paper are: chem-ph
13
The categories of this paper are: quant-ph
1
The categories of this paper are: cs
36
The categories of this paper are: cmp-lg
0
The categories of this paper are: hep-ph
23
The categories of this paper are: solv-int
32
The categories of this paper are: atom-ph
2
The categories of this paper are: math
14
The categories of this paper are: math-ph
25
The categories of this paper are: patt-sol
3
The categories of this paper are: physics
5
The categories of this paper are: gr-qc
15
The categories of this paper are: nucl-ex
31
The categories of this paper are: ao-sci