Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Wilson loop remainder function for null polygons in the limit of
  self-crossing   The remainder function of Wilson loops for null polygons becomes divergent if
two vertices approach each other. We apply RG techniques to the limiting
configuration of a contour with self-intersection. As a result for the two loop
remainder we find a quadratic divergence in the logarithm of the distance
between the two approaching vertices. The divergence is multiplied by a factor,
which is given by a pure number plus the product of two logarithms of
cross-ratios characterising the conformal geometry of the self-crossing.

20
The categories of this paper are: acc-phys
2
The categories of this paper are: math
1
The categories of this paper are: cs
4
The categories of this paper are: cond-mat
35
The categories of this paper are: mtrl-th
23
The categories of this paper are: solv-int
26
The categories of this paper are: bayes-an
17
The categories of this paper are: q-fin
19
The categories of this paper are: eess
6
The categories of this paper are: astro-ph
22
The categories of this paper are: chao-dyn
31
The categories of this paper are: ao-sci
11
The categories of this paper are: hep-lat
18
The categories of this paper are: econ
3
The categories of this paper are: physics
32
The categories of this paper are: atom-ph