Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Covariant Inertial Forces for Spinors   In this paper we consider the Dirac spinor field in interaction with a
background of electrodynamics and torsion-gravity; by performing the polar
reduction we acquire the possibility to introduce a new set of objects that
have the geometrical status of non-vanishing tensors but which seem to contain
the same information of the connection: thus they appear to be describing
something that seems like an inertial force but which is also essentially
covariant. After a general introduction, we exemplify these tensors in the very
well known instance of the orbital of minimal energy for an electron in the
case of the Hydrogen atom: we will see that the invariants built with these
tensors remain different from zero even for free field configurations. An
outlook regarding possible interpretations of such a set of tensors will be
sketched. A few final comments will eventually be given.

22
The categories of this paper are: chao-dyn
8
The categories of this paper are: hep-ex
25
The categories of this paper are: patt-sol
9
The categories of this paper are: nlin
7
The categories of this paper are: hep-th
0
The categories of this paper are: hep-ph
33
The categories of this paper are: plasm-ph
35
The categories of this paper are: mtrl-th
23
The categories of this paper are: solv-int
31
The categories of this paper are: ao-sci
12
The categories of this paper are: nucl-th
11
The categories of this paper are: hep-lat
2
The categories of this paper are: math
18
The categories of this paper are: econ
14
The categories of this paper are: math-ph
27
The categories of this paper are: comp-gas