Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Catastrophe observation in a Josephson junction system   We report on a direct quantitative comparison between Thom's general
catastrophe theory for systems presenting discontinuous behavior and
experimental reality. It is demonstrated that the model provides a striking
quantitative description of the measured experimental features of the complex
nonlinear system generating the most appealing class of sensors and devices
nowadays used in experiments, namely the Superconducting Quantum Interference
Devices (SQUIDs). The parameter space of the SQUID system that we investigate
displays all the features associated with a butterfly catastrophe, namely a
catastrophe expected for a system having four control parameters and one state
variable.

21
The categories of this paper are: adap-org
5
The categories of this paper are: gr-qc
37
The categories of this paper are: supr-con
7
The categories of this paper are: hep-th
14
The categories of this paper are: math-ph
2
The categories of this paper are: math
32
The categories of this paper are: atom-ph
36
The categories of this paper are: cmp-lg
8
The categories of this paper are: hep-ex
0
The categories of this paper are: hep-ph
11
The categories of this paper are: hep-lat
28
The categories of this paper are: alg-geom
30
The categories of this paper are: q-alg
6
The categories of this paper are: astro-ph
22
The categories of this paper are: chao-dyn
12
The categories of this paper are: nucl-th