Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Ultrafast response of plasma-like reflectivity edge in (TMTTF)2AsF6
  driven by 7-fs, 1.5-cycle strong-light field   The strong light-field effect of (TMTTF)2AsF6 was investigated utilizing
1.5-cycle, 7-fs infrared pulses. The ultarfast (20 fs) and large (40%) response
of the plasma-like reflectivity edge (0.7 eV) was analyzed by the changes in
omega_p=sqrt(ne2/(epsilon_0*epsilon(infty)*m)} (n: number of charges in the 1/4
filled-band, m: mass of charge, epsilon(infty): dielectric constants for
high-frequency and vacuum, e: elementary charge). The 3% reduction in omega_p
is attributed to the 6% increase in m. Furthermore, 20 fs oscillation of
omega_p in the time domain indicates that the plasma-like edge is affected by
the charge gap (0.2 eV) nature. Theoretical calculations suggest that the
Coulomb repulsion plays an important role in the increase in m.

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The categories of this paper are: nlin
32
The categories of this paper are: atom-ph
35
The categories of this paper are: mtrl-th
6
The categories of this paper are: astro-ph
14
The categories of this paper are: math-ph
1
The categories of this paper are: cs
28
The categories of this paper are: alg-geom
10
The categories of this paper are: q-bio
24
The categories of this paper are: dg-ga
33
The categories of this paper are: plasm-ph
30
The categories of this paper are: q-alg
5
The categories of this paper are: gr-qc
0
The categories of this paper are: hep-ph
2
The categories of this paper are: math
22
The categories of this paper are: chao-dyn
18
The categories of this paper are: econ