Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Femtosecond response in rare gas matrices doped with NO impurities: A
  stochastic approach   The femtosecond response of NO-doped rare gas matrices is studied within a
stochastic Langevin theoretical framework. As is shown, a simple damped
harmonic oscillator model can describe properly the absorption and emission
line shapes associated with the NO ($A^2\Sigma^+ \longleftrightarrow X^2\Pi$)
electronic transitions inside these media as well as the matrix first-solvation
shell response in a process with two timescales, finding a fairly good
agreement with available experimental data. This approach thus constitutes an
alternative and complementary way to analyze the structural relaxation dynamics
of systems in liquids and solids, leading to a better understanding of the
underlying physics.

36
The categories of this paper are: cmp-lg
12
The categories of this paper are: nucl-th
10
The categories of this paper are: q-bio
1
The categories of this paper are: cs
30
The categories of this paper are: q-alg
19
The categories of this paper are: eess
18
The categories of this paper are: econ
35
The categories of this paper are: mtrl-th
6
The categories of this paper are: astro-ph
9
The categories of this paper are: nlin
5
The categories of this paper are: gr-qc
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
32
The categories of this paper are: atom-ph
23
The categories of this paper are: solv-int