Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Double chiral logarithms of Generalized Chiral Perturbation Theory for
  low-energy pi-pi scattering   We express the two-massless-flavor Gell-Mann--Oakes--Renner ratio in terms of
low-energy pi-pi observables, including the O(p^6) double chiral logarithms of
generalized chiral perturbation theory. Their contribution is sizeable and
tends to compensate the one from the single chiral logarithms. However it is
not large enough to spoil the convergence of the chiral expansion. As a signal
of reduced theoretical uncertainty, we find that the scale dependence from the
one-loop single logarithms is almost completely canceled by the one from the
two-loop double logarithms.

35
The categories of this paper are: mtrl-th
7
The categories of this paper are: hep-th
33
The categories of this paper are: plasm-ph
2
The categories of this paper are: math
20
The categories of this paper are: acc-phys
21
The categories of this paper are: adap-org
22
The categories of this paper are: chao-dyn
13
The categories of this paper are: quant-ph
4
The categories of this paper are: cond-mat
8
The categories of this paper are: hep-ex
29
The categories of this paper are: funct-an
6
The categories of this paper are: astro-ph
9
The categories of this paper are: nlin
27
The categories of this paper are: comp-gas
16
The categories of this paper are: stat
18
The categories of this paper are: econ