Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Coframe energy-momentum current. Algebraic properties   The coframe (teleparallel) description of gravity is known as a viable
alternative to GR. One of advantages of this model is the existence of a
conserved energy-momentum current witch is covariant under all symmetries of
the three-parameter Lagrangian. In this paper we study the relation between the
covector valued current and the energy-momentum tensor. Algebraic properties of
the conserved current for different values of parameters are derived. It is
shown that the tensor corresponding to the coframe current is traceless and, in
contrast to the electromagnetic field, has in general a non vanishing
antisymmetric part. The symmetric part is also non zero for all values of the
parameters. Consequently, the conserved current involves the energy-momentum as
well as the rotational (spin) properties of the field.

29
The categories of this paper are: funct-an
24
The categories of this paper are: dg-ga
37
The categories of this paper are: supr-con
35
The categories of this paper are: mtrl-th
3
The categories of this paper are: physics
22
The categories of this paper are: chao-dyn
6
The categories of this paper are: astro-ph
27
The categories of this paper are: comp-gas
28
The categories of this paper are: alg-geom
0
The categories of this paper are: hep-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: eess
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The categories of this paper are: solv-int
4
The categories of this paper are: cond-mat
14
The categories of this paper are: math-ph
33
The categories of this paper are: plasm-ph