Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Combining complex and radial slave boson fields within the
  Kotliar-Ruckenstein representation of correlated impurities   The gauge symmetry group of any slave boson representation allows to gauge
away the phase of bosonic fields. One benefit of this radial field formulation
is the elimination of spurious Bose condensations when saddle-point
approximation is performed. Within the Kotliar-Ruckenstein representation,
three of the four bosonic fields can be radial while the last one has to remain
complex. In this work, we present the procedure to carry out the functional
integration involving constrained fermionic fields, complex bosonic fields, and
radial bosonic fields. The correctness of the representation is verified by
exactly evaluating the partition function and the Green's function of the
Hubbard model in the atomic limit.

27
The categories of this paper are: comp-gas
24
The categories of this paper are: dg-ga
33
The categories of this paper are: plasm-ph
8
The categories of this paper are: hep-ex
31
The categories of this paper are: ao-sci
1
The categories of this paper are: cs
12
The categories of this paper are: nucl-th
28
The categories of this paper are: alg-geom
21
The categories of this paper are: adap-org
0
The categories of this paper are: hep-ph
9
The categories of this paper are: nlin
26
The categories of this paper are: bayes-an
35
The categories of this paper are: mtrl-th
34
The categories of this paper are: chem-ph
20
The categories of this paper are: acc-phys
36
The categories of this paper are: cmp-lg