Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Nonlinear coherent state of an exciton in a wide quantum dot   In this paper, we derive the dynamical algebra of a particle confined in an
infinite spherical well by using the $f$-deformed oscillator approach. We
consider an exciton with definite angular momentum in a wide quantum dot
interacting with two laser beams. We show that under the weak confinement
condition, and quantization of the center-of-mass motion of exciton, the
stationary state of it can be considered as a special kind of nonlinear
coherent states which exhibits the quadrature squeezing.

18
The categories of this paper are: econ
22
The categories of this paper are: chao-dyn
3
The categories of this paper are: physics
33
The categories of this paper are: plasm-ph
31
The categories of this paper are: ao-sci
15
The categories of this paper are: nucl-ex
9
The categories of this paper are: nlin
24
The categories of this paper are: dg-ga
23
The categories of this paper are: solv-int
5
The categories of this paper are: gr-qc
36
The categories of this paper are: cmp-lg
28
The categories of this paper are: alg-geom
12
The categories of this paper are: nucl-th
17
The categories of this paper are: q-fin
26
The categories of this paper are: bayes-an
7
The categories of this paper are: hep-th