Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Noether Gauge Symmetry Approach in f(R) Gravity   We discuss the f(R) gravity model in which the origin of dark energy is
identified as a modification of gravity. The Noether symmetry with gauge term
is investigated for the f(R) cosmological model. By utilization of the Noether
Gauge Symmetry (NGS) approach, we obtain two exact forms f(R) for which such
symmetries exist. Further it is shown that these forms of f(R) are stable.

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The categories of this paper are: nucl-ex
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The categories of this paper are: astro-ph
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The categories of this paper are: chem-ph
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The categories of this paper are: math-ph
13
The categories of this paper are: quant-ph
16
The categories of this paper are: stat
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The categories of this paper are: eess
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The categories of this paper are: alg-geom
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The categories of this paper are: supr-con
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The categories of this paper are: patt-sol
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The categories of this paper are: nlin
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The categories of this paper are: hep-lat
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The categories of this paper are: ao-sci
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The categories of this paper are: hep-ph
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The categories of this paper are: q-fin
36
The categories of this paper are: cmp-lg