Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Varying Speed of Light in Eddington-inspired Born-Infield Gravity
  with Rainbow Metric   In this paper, we proposed that at each point of spacetime, in addition to
the Riemannian metric tensor which describes the geometry of spacetime and the
gravitational field, there is an rainbow metric tensor which shows the geometry
of spacetime depends on the energy of the test particle. Because
Eddington-inspired Born-Infield(EiBI) gravity can be seen as a special
bi-metric gravity, we research a varying speed of light theory for a bi-metric
gravity corresponding to EiBI gravity. For FRW universe, we find the energy of
test particle will increase with rising energy density of universe. We also
research the varying speed of light for three different kinds of rainbow
functions and find the sign of parameter $\kappa$ would influence the trend of
spend of light.

35
The categories of this paper are: mtrl-th
32
The categories of this paper are: atom-ph
12
The categories of this paper are: nucl-th
7
The categories of this paper are: hep-th
10
The categories of this paper are: q-bio
4
The categories of this paper are: cond-mat
25
The categories of this paper are: patt-sol
3
The categories of this paper are: physics
16
The categories of this paper are: stat
2
The categories of this paper are: math
0
The categories of this paper are: hep-ph
9
The categories of this paper are: nlin
33
The categories of this paper are: plasm-ph
27
The categories of this paper are: comp-gas
18
The categories of this paper are: econ
36
The categories of this paper are: cmp-lg