Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The dark energy effect as manifestation of the signal propagation
  features in expanding Universe   The formula describing the explicit red-shift dependence for the distance
covered by a signal in the expanding space, and also the expressions for Hubble
law have been derived directly from the conformal group transformations taking
into account the light-cone equation. The obtained relations are associated
with the luminosity distance represented as an explicit function of the red
shift involving no other parameters but the scaling factor $c H^{-1}_0$. These
relations represent in a pure kinematical way and in a complete agreement with
observations, the revealed transition of the Metagalaxy to accelerated
expansion (the dark energy effect).

35
The categories of this paper are: mtrl-th
16
The categories of this paper are: stat
4
The categories of this paper are: cond-mat
30
The categories of this paper are: q-alg
14
The categories of this paper are: math-ph
26
The categories of this paper are: bayes-an
24
The categories of this paper are: dg-ga
0
The categories of this paper are: hep-ph
29
The categories of this paper are: funct-an
19
The categories of this paper are: eess
33
The categories of this paper are: plasm-ph
32
The categories of this paper are: atom-ph
23
The categories of this paper are: solv-int
25
The categories of this paper are: patt-sol
37
The categories of this paper are: supr-con
22
The categories of this paper are: chao-dyn