Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: An Adiabatic Approximation to the Path Integral for Relativistic
  Fermionic Fields   A new approach to the path integral over fermionic fields, based on the
extension of a reformulation of the adiabatic approximation to some quantum
mechanical systems, is presented. A novel non-analytic contribution to the
efective fermionic action for a fermion field coupled to a non-Abelian vector
field is identified. The possible interpretation of this contribution as a
violation of the decoupling theorem in Quantum Field Theory (QFT) is discussed.
The generalization of the approach to the case of finite temperature and
density suggests the possibility to apply it to the understanding of
non-perturbative properties in QFT and their dependence on temperature and
density.

24
The categories of this paper are: dg-ga
14
The categories of this paper are: math-ph
5
The categories of this paper are: gr-qc
19
The categories of this paper are: eess
6
The categories of this paper are: astro-ph
30
The categories of this paper are: q-alg
12
The categories of this paper are: nucl-th
9
The categories of this paper are: nlin
20
The categories of this paper are: acc-phys
11
The categories of this paper are: hep-lat
15
The categories of this paper are: nucl-ex
32
The categories of this paper are: atom-ph
23
The categories of this paper are: solv-int
1
The categories of this paper are: cs
18
The categories of this paper are: econ
34
The categories of this paper are: chem-ph