Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Scaling and universality in the 2D Ising model with a magnetic field   The scaling function of the 2D Ising model in a magnetic field on the square
and triangular lattices is obtained numerically via Baxter's variational corner
transfer matrix approach. The use of the Aharony-Fisher non-linear scaling
variables allowed us to perform calculations sufficiently away from the
critical point to obtain very high precision data, which convincingly confirm
all predictions of the scaling and universality hypotheses. The results are in
excellent agreement with the field theory calculations of Fonseca and
Zamolodchikov as well as with many previously known exact and numerical results
for the 2D Ising model. This includes excellent agreement with the classic
analytic results for the magnetic susceptibility by Barouch, McCoy, Tracy and
Wu, recently enhanced by Orrick, Nickel, Guttmann and Perk.

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The categories of this paper are: math-ph
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The categories of this paper are: gr-qc
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The categories of this paper are: stat
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The categories of this paper are: adap-org
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The categories of this paper are: acc-phys
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The categories of this paper are: nucl-th
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The categories of this paper are: hep-lat
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The categories of this paper are: solv-int
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The categories of this paper are: supr-con
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The categories of this paper are: physics
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The categories of this paper are: hep-ex
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The categories of this paper are: dg-ga
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The categories of this paper are: alg-geom
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The categories of this paper are: comp-gas
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The categories of this paper are: cs
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The categories of this paper are: quant-ph