Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Generalized Semi-Holographic Universe   We study the semi-holographic idea in context of decaying dark components.
The energy flow between dark energy and the compensating dark matter is
thermodynamically generalized to involve a particle number variable dark
component with non-zero chemical potential. It's found that, unlike the
original semi-holographic model, no cosmological constant is needed for a
dynamical evolution of the universe. A transient phantom phase appears while a
non-trivial dark energy-dark matter scaling solution keeps at late time, which
evades the big-rip and helps to resolve the coincidence problem. For reasonable
parameters, the deceleration parameter is well consistent with current
observations. The original semi-holographic model is extended and it also
suggests that the concordance model may be reconstructed from the
semi-holographic idea.

10
The categories of this paper are: q-bio
0
The categories of this paper are: hep-ph
8
The categories of this paper are: hep-ex
36
The categories of this paper are: cmp-lg
1
The categories of this paper are: cs
19
The categories of this paper are: eess
12
The categories of this paper are: nucl-th
26
The categories of this paper are: bayes-an
2
The categories of this paper are: math
14
The categories of this paper are: math-ph
17
The categories of this paper are: q-fin
15
The categories of this paper are: nucl-ex
33
The categories of this paper are: plasm-ph
3
The categories of this paper are: physics
20
The categories of this paper are: acc-phys
16
The categories of this paper are: stat