Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The scaling limit of the $(\nabla+\Delta)$-model   In this article we study the scaling limit of the interface model on
$\mathbb{Z}^d$ where the Hamiltonian is given by a mixed gradient and Laplacian
interaction. We show that in any dimension the scaling limit is given by the
Gaussian free field. We discuss the appropriate spaces in which the convergence
takes place. While in infinite volume the proof is based on Fourier analytic
methods, in finite volume we rely on some discrete PDE techniques involving
finite-difference approximation of elliptic boundary value problems.

21
The categories of this paper are: adap-org
3
The categories of this paper are: physics
11
The categories of this paper are: hep-lat
32
The categories of this paper are: atom-ph
27
The categories of this paper are: comp-gas
1
The categories of this paper are: cs
12
The categories of this paper are: nucl-th
36
The categories of this paper are: cmp-lg
0
The categories of this paper are: hep-ph
6
The categories of this paper are: astro-ph
23
The categories of this paper are: solv-int
28
The categories of this paper are: alg-geom
7
The categories of this paper are: hep-th
10
The categories of this paper are: q-bio
17
The categories of this paper are: q-fin
24
The categories of this paper are: dg-ga