Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Probing light-driven quantum materials with ultrafast resonant inelastic
  X-ray scattering   Ultrafast optical pulses are an increasingly important tool for controlling
quantum materials and triggering novel photo-induced phase transitions.
Understanding these dynamic phenomena requires a probe sensitive to spin,
charge, and orbital degrees of freedom. Time-resolved resonant inelastic X-ray
scattering (trRIXS) is an emerging spectroscopic method, which responds to this
need by providing unprecedented access to the finite-momentum fluctuation
spectrum of photoexcited solids. In this Perspective, we briefly review
state-of-the-art trRIXS experiments on condensed matter systems, as well as
recent theoretical advances. We then describe future research opportunities in
the context of light control of quantum matter.

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The categories of this paper are: dg-ga
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The categories of this paper are: patt-sol
14
The categories of this paper are: math-ph
28
The categories of this paper are: alg-geom
33
The categories of this paper are: plasm-ph
2
The categories of this paper are: math
18
The categories of this paper are: econ
19
The categories of this paper are: eess
12
The categories of this paper are: nucl-th
29
The categories of this paper are: funct-an
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The categories of this paper are: supr-con
22
The categories of this paper are: chao-dyn
8
The categories of this paper are: hep-ex
26
The categories of this paper are: bayes-an
17
The categories of this paper are: q-fin
30
The categories of this paper are: q-alg