Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: OPE Coefficients of the 3D Ising model with a trapping potential   Recently the OPE coefficients of the 3D Ising model universality class have
been calculated by studying the two-point functions perturbed from the critical
point with a relevant field. We show that this method can be applied also when
the perturbation is performed with a relevant field coupled to a non uniform
potential acting as a trap. This setting is described by the trap size scaling
ansatz, that can be combined with the general framework of the conformal
perturbation in order to write down the correlators $<\sigma (\mathbf
{r})\sigma(0)>$, $<\sigma (\mathbf{r})\epsilon(0)>$ and $<\epsilon (\mathbf
{r})\epsilon(0)>$, from which the OPE coefficients can be estimated. We find
$C^{\sigma}_{\sigma\epsilon}= 1.051(3)$ , in agreement with the results already
known in the literature, and $C^{\epsilon}_{\epsilon\epsilon}= 1.32 (15)$ ,
confirming and improving the previous estimate obtained in the uniform
perturbation case.

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The categories of this paper are: atom-ph
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The categories of this paper are: math
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The categories of this paper are: eess
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The categories of this paper are: gr-qc
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The categories of this paper are: quant-ph
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The categories of this paper are: alg-geom
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The categories of this paper are: q-alg
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The categories of this paper are: comp-gas
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The categories of this paper are: hep-ex
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The categories of this paper are: cs
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The categories of this paper are: astro-ph
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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: chao-dyn
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The categories of this paper are: adap-org
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The categories of this paper are: nlin