Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the representation of effective quantum field theories   We discuss a general model for effective quantum field theories (QFTs), which
for example comprises quantum chromodynamics and quantum electrodynamics. We
assume in the model a perturbative expansion of the Lagrangian with respect to
a cut-off-energy parameter. For each order in the expansion we rigorously
derive a representation, which is unitarily equivalent to the representation of
the effective QFT in the non-interaction approximation. We interpret the
various representations as different particle pictures with respect to which
the effective QFT can be described. We further derive a rigorous scattering
theory, which exactly reproduces results of formal scattering theory in quantum
field theory.

28
The categories of this paper are: alg-geom
31
The categories of this paper are: ao-sci
22
The categories of this paper are: chao-dyn
33
The categories of this paper are: plasm-ph
0
The categories of this paper are: hep-ph
4
The categories of this paper are: cond-mat
32
The categories of this paper are: atom-ph
11
The categories of this paper are: hep-lat
3
The categories of this paper are: physics
27
The categories of this paper are: comp-gas
37
The categories of this paper are: supr-con
8
The categories of this paper are: hep-ex
25
The categories of this paper are: patt-sol
24
The categories of this paper are: dg-ga
34
The categories of this paper are: chem-ph
1
The categories of this paper are: cs