Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Two loop results from one loop computations and non perturbative
  solutions of exact evolution equations   A nonperturbative method is proposed for the approximative solution of the
exact evolution equation which describes the scale dependence of the effective
average action. It consists of a combination of exact evolution equations for
independent couplings with renormalization group improved one loop expressions
of secondary couplings. Our method is illustrated by an example: We compute the
beta-function of the quartic coupling lambda of an O(N) symmetric scalar field
theory to order lambda^3 as well as the anomalous dimension to order lambda^2
using only one loop expressions and find agreement with the two loop
perturbation theory. We also treat the case of very strong coupling and confirm
the existence of a "triviality bound".

19
The categories of this paper are: eess
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The categories of this paper are: dg-ga
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The categories of this paper are: solv-int
18
The categories of this paper are: econ
4
The categories of this paper are: cond-mat
6
The categories of this paper are: astro-ph
5
The categories of this paper are: gr-qc
26
The categories of this paper are: bayes-an
17
The categories of this paper are: q-fin
35
The categories of this paper are: mtrl-th
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The categories of this paper are: patt-sol
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The categories of this paper are: funct-an
31
The categories of this paper are: ao-sci
22
The categories of this paper are: chao-dyn
3
The categories of this paper are: physics
16
The categories of this paper are: stat