Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Artificial gravitation effect on spin-polarized exciton-polaritons   The pseudospin dynamics of long-living exciton-polaritons in a wedged 2D
cavity has been studied theoretically accounting for the external magnetic
field effect. The cavity width variation plays the role of the artificial
gravitational force acting on a massive particle: exciton-polariton. A
semi-classical model of the spin-polarization dynamics of ballistically
propagating exciton-polaritons has been developed. It has been shown that for
the specific choise of the magnetic field magnitude and the initial polariton
wave vector the polariton polarization vector tends to an attractor on the
Poincare sphere. Based on this effect, the switching the polariton polarization
in the ballistic regime has been demonstrated. The self-interference of the
polariton field emitted by a point-like source has been shown to induce the
formation of interference patterns reminiscent of the interference patterns of
cylindrical and plane waves.

30
The categories of this paper are: q-alg
14
The categories of this paper are: math-ph
3
The categories of this paper are: physics
9
The categories of this paper are: nlin
31
The categories of this paper are: ao-sci
18
The categories of this paper are: econ
19
The categories of this paper are: eess
23
The categories of this paper are: solv-int
11
The categories of this paper are: hep-lat
35
The categories of this paper are: mtrl-th
34
The categories of this paper are: chem-ph
25
The categories of this paper are: patt-sol
29
The categories of this paper are: funct-an
36
The categories of this paper are: cmp-lg
33
The categories of this paper are: plasm-ph
5
The categories of this paper are: gr-qc