Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Fractal energy spectrum of a polariton gas in a Fibonacci quasi-periodic
  potential   We report on the study of a polariton gas confined in a quasi-periodic one
dimensional cavity, described by a Fibonacci sequence. Imaging the polariton
modes both in real and reciprocal space, we observe features characteristic of
their fractal energy spectrum such as the opening of mini-gaps obeying the gap
labeling theorem and log-periodic oscillations of the integrated density of
states. These observations are accurately reproduced solving an effective 1D
Schr\"{o}dinger equation, illustrating the potential of cavity polaritons as a
quantum simulator in complex topological geometries.

19
The categories of this paper are: eess
0
The categories of this paper are: hep-ph
11
The categories of this paper are: hep-lat
9
The categories of this paper are: nlin
15
The categories of this paper are: nucl-ex
18
The categories of this paper are: econ
24
The categories of this paper are: dg-ga
35
The categories of this paper are: mtrl-th
37
The categories of this paper are: supr-con
7
The categories of this paper are: hep-th
31
The categories of this paper are: ao-sci
22
The categories of this paper are: chao-dyn
30
The categories of this paper are: q-alg
17
The categories of this paper are: q-fin
33
The categories of this paper are: plasm-ph
21
The categories of this paper are: adap-org