Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Time-dependent renormalized-natural-orbital theory applied to
  laser-driven H$_2^+$   Recently introduced time-dependent renormalized-natural orbital theory
(TDRNOT) is extended towards a multi-component approach in order to describe
H$_2^+$ beyond the Born-Oppenheimer approximation. Two kinds of natural
orbitals, describing the electronic and the nuclear degrees of freedom are
introduced, and the exact equations of motion for them are derived. The theory
is benchmarked by comparing numerically exact results of the time-dependent
Schr\"odinger equation for a H$_2^+$ model system with the corresponding TDRNOT
predictions. Ground state properties, linear response spectra, fragmentation,
and high-order harmonic generation are investigated.

27
The categories of this paper are: comp-gas
36
The categories of this paper are: cmp-lg
20
The categories of this paper are: acc-phys
10
The categories of this paper are: q-bio
9
The categories of this paper are: nlin
2
The categories of this paper are: math
24
The categories of this paper are: dg-ga
16
The categories of this paper are: stat
4
The categories of this paper are: cond-mat
11
The categories of this paper are: hep-lat
15
The categories of this paper are: nucl-ex
18
The categories of this paper are: econ
30
The categories of this paper are: q-alg
25
The categories of this paper are: patt-sol
26
The categories of this paper are: bayes-an
37
The categories of this paper are: supr-con