Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Absorption of acoustic phonons in Fluorinated Carbon Nanotubes with
  non-parabolic, double periodic band   We studied theoretically the absorption of acoustic phonons in the hypersound
regime in Fluorine modified Carbon Nanotube (F-CNT) $\Gamma_q^{F-CNT}$ and
compared it to that of undoped Single Walled Nanotube (SWNT) $\Gamma_q^{SWNT}$.
Per the numerical analysis, the F-CNT showed less absorption to that of SWNT
thus $\vert\Gamma_q^{F-CNT}\vert < \vert\Gamma_q^{SWNT}\vert $. This is due to
the fact that Fluorine is highly electronegative and weakens the walls of the
SWNT. Thus, the $\pi$-electrons associated with to the Fluorine which causes
less free charge carriers to interact with the phonons and hence changing the
metallic properties of the SWNT to semiconductor by the doping process. From
the graphs obtained, the ratio of hypersound absorption in SWNT to F-CNT at $T
= 45K$ is $\frac{\Gamma_{(SWNT)}}{\Gamma_{(F-CNT)}}\approx 29$ whilst at $T =
55K$, is $\frac{\Gamma_{(SWNT)}}{\Gamma_{(F-CNT)}}\approx 9$ and at $T = 65K$,
is $\frac{\Gamma_{(SWNT)}}{\Gamma_{(F-CNT)}}\approx 2$. Clearly, the ratio
decreases as the temperature increases.

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The categories of this paper are: chem-ph
23
The categories of this paper are: solv-int
11
The categories of this paper are: hep-lat
1
The categories of this paper are: cs
13
The categories of this paper are: quant-ph
2
The categories of this paper are: math
14
The categories of this paper are: math-ph
30
The categories of this paper are: q-alg
25
The categories of this paper are: patt-sol
15
The categories of this paper are: nucl-ex
8
The categories of this paper are: hep-ex
12
The categories of this paper are: nucl-th
20
The categories of this paper are: acc-phys
0
The categories of this paper are: hep-ph
6
The categories of this paper are: astro-ph
24
The categories of this paper are: dg-ga