Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Selection of dominant multi-exciton transitions in disordered linear
  J-aggregates   We show that the third-order optical response of disordered linear
J-aggregates can be calculated by considering only a limited number of
transitions between (multi-) exciton states. We calculate the pump-probe
absorption spectrum resulting from the truncated set of transitions and show
that, apart from the blue wing of the induced absorption peak, it agrees well
with the exact spectrum.

9
The categories of this paper are: nlin
25
The categories of this paper are: patt-sol
15
The categories of this paper are: nucl-ex
18
The categories of this paper are: econ
3
The categories of this paper are: physics
19
The categories of this paper are: eess
30
The categories of this paper are: q-alg
2
The categories of this paper are: math
26
The categories of this paper are: bayes-an
5
The categories of this paper are: gr-qc
20
The categories of this paper are: acc-phys
16
The categories of this paper are: stat
31
The categories of this paper are: ao-sci
27
The categories of this paper are: comp-gas
12
The categories of this paper are: nucl-th
36
The categories of this paper are: cmp-lg