Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Theory of x-ray scattering from laser-driven electronic systems   We describe, within the framework of quantum electrodynamics, an interaction
between a non-resonant hard x-ray pulse and an electronic system in the
presence of a temporally periodic laser field driving electron dynamics in this
system. We apply Floquet theory to describe the laser-driven electronic system,
and then obtain the scattering probability of an arbitrary nonresonant x-ray
pulse from such a system employing the density-matrix formalism. We show that
the scattering probability can be connected to the time-dependent electron
density of the driven electronic system only under certain conditions, in
particular, if the bandwidth of the probe x-ray pulse is sufficiently narrow to
spectroscopically resolve transitions to different final states. A special
focus is laid on application of the theory to laser-driven crystals in a
strongly nonperturbative regime. We show how the time-dependent electron
density of a crystal can be reconstructed from energy-resolved scattering
patterns. This is illustrated by a calculation of a diffraction signal from a
driven MgO crystal.

26
The categories of this paper are: bayes-an
13
The categories of this paper are: quant-ph
12
The categories of this paper are: nucl-th
5
The categories of this paper are: gr-qc
10
The categories of this paper are: q-bio
11
The categories of this paper are: hep-lat
36
The categories of this paper are: cmp-lg
18
The categories of this paper are: econ
35
The categories of this paper are: mtrl-th
33
The categories of this paper are: plasm-ph
9
The categories of this paper are: nlin
1
The categories of this paper are: cs
24
The categories of this paper are: dg-ga
4
The categories of this paper are: cond-mat
34
The categories of this paper are: chem-ph
0
The categories of this paper are: hep-ph