Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: $\Lambda$CDM Bounce Cosmology without $\Lambda$CDM: the case of modified
  gravity   We provide an $F(R)$ gravity description of a $\Lambda$CDM bouncing model,
without the need for matter fluids or for cosmological constant. As we
explicitly demonstrate, the two cosmological eras that constitute the
$\Lambda$CDM bouncing model, can be generated by $F(R)$ gravity which can lead
to accelerating cosmologies. The resulting F(R) gravity has Einstein frame
inflationary properties that have concordance to the latest Planck
observational data. Both the $F(R)$ gravity stability properties are thoroughly
investigated and also, the gravitational particle production, a feature
necessary for the viability of the $\Lambda$CDM bounce scenario, is also
addressed. As we will show, the $\Lambda$CDM bounce model can be successfully
described by pure $F(R)$ gravity, with appealing phenomenological attributes,
which we extensively discuss.

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The categories of this paper are: comp-gas
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The categories of this paper are: solv-int
29
The categories of this paper are: funct-an
18
The categories of this paper are: econ
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The categories of this paper are: eess
0
The categories of this paper are: hep-ph
21
The categories of this paper are: adap-org
13
The categories of this paper are: quant-ph
15
The categories of this paper are: nucl-ex
9
The categories of this paper are: nlin
32
The categories of this paper are: atom-ph
30
The categories of this paper are: q-alg
33
The categories of this paper are: plasm-ph
12
The categories of this paper are: nucl-th
2
The categories of this paper are: math
3
The categories of this paper are: physics