Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Flow equation of functional renormalization group for three-body
  scattering problems   Functional renormalization group (FRG) is applied to the three-body
scattering problem in the two-component fermionic system with an attractive
contact interaction. We establish a new and correct flow equation on the basis
of FRG and show that our flow equation is consistent with integral equations
obtained from the Dyson-Schwinger equation. In particular, the relation of our
flow equation and the Skornyakov and Ter-Martirosyan equation for the
atom-dimer scattering is made clear.

25
The categories of this paper are: patt-sol
13
The categories of this paper are: quant-ph
2
The categories of this paper are: math
26
The categories of this paper are: bayes-an
27
The categories of this paper are: comp-gas
3
The categories of this paper are: physics
5
The categories of this paper are: gr-qc
29
The categories of this paper are: funct-an
11
The categories of this paper are: hep-lat
23
The categories of this paper are: solv-int
33
The categories of this paper are: plasm-ph
19
The categories of this paper are: eess
18
The categories of this paper are: econ
14
The categories of this paper are: math-ph
34
The categories of this paper are: chem-ph
28
The categories of this paper are: alg-geom