Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Universal long-wavelength nonlinear optical response of noble gases   We demonstrate numerically that the long-wavelength nonlinear dipole moment
and ionization rate versus electric field strength $F$ for different noble
gases can be scaled onto each other, revealing universal functions that
characterize the form of the nonlinear response. We elucidate the physical
origin of the universality by using a metastable state analysis of the
light-atom interaction in combination with a scaling analysis. Our results also
provide a powerful new means of characterizing the nonlinear response in the
mid-infrared and long-wave infrared for optical filamentation studies.

32
The categories of this paper are: atom-ph
19
The categories of this paper are: eess
35
The categories of this paper are: mtrl-th
28
The categories of this paper are: alg-geom
8
The categories of this paper are: hep-ex
20
The categories of this paper are: acc-phys
1
The categories of this paper are: cs
5
The categories of this paper are: gr-qc
2
The categories of this paper are: math
29
The categories of this paper are: funct-an
15
The categories of this paper are: nucl-ex
23
The categories of this paper are: solv-int
33
The categories of this paper are: plasm-ph
22
The categories of this paper are: chao-dyn
14
The categories of this paper are: math-ph
34
The categories of this paper are: chem-ph