Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Deviations of the exciton level spectrum in cuprous oxide from the
  hydrogen series   Recent high-resolution absorption spectroscopy on excited excitons in cuprous
oxide [Nature (London) 514, 343 (2014)] has revealed significant deviations of
their spectrum from that of the ideal hydrogen-like series. Here we show that
the complex band dispersion of the crystal, which determines the kinetic energy
of electrons and holes, strongly affects the exciton binding energy.
Specifically, we show that the nonparabolicity of the band dispersion is the
main cause of the deviation from the hydrogen series. Experimental data
collected from high-resolution absorption spectroscopy in electric fields
validate the assignment of the deviation to the nonparabolicity of the band
dispersion.

34
The categories of this paper are: chem-ph
10
The categories of this paper are: q-bio
28
The categories of this paper are: alg-geom
5
The categories of this paper are: gr-qc
1
The categories of this paper are: cs
32
The categories of this paper are: atom-ph
8
The categories of this paper are: hep-ex
26
The categories of this paper are: bayes-an
22
The categories of this paper are: chao-dyn
19
The categories of this paper are: eess
6
The categories of this paper are: astro-ph
29
The categories of this paper are: funct-an
25
The categories of this paper are: patt-sol
11
The categories of this paper are: hep-lat
21
The categories of this paper are: adap-org
16
The categories of this paper are: stat