Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Inferring nonlinear parabolic field equations from modulus data   We give a means for measuring the equation of evolution of a complex scalar
field that is known to obey an otherwise unspecified (2+1)-dimensional
dissipative nonlinear parabolic differential equation, given field moduli over
three closely-spaced planes. The formalism is tested by recovering nonlinear
interactions and the associated equation of motion from simulated data for a
range of (2+1)-dimensional nonlinear systems, including those which exhibit
spontaneous symmetry breaking. The technique is of broad applicability, being
able to infer a wide class of partial differential equations, which govern
systems ranging from nonlinear optics to quantum fluids.

21
The categories of this paper are: adap-org
29
The categories of this paper are: funct-an
26
The categories of this paper are: bayes-an
7
The categories of this paper are: hep-th
0
The categories of this paper are: hep-ph
20
The categories of this paper are: acc-phys
11
The categories of this paper are: hep-lat
33
The categories of this paper are: plasm-ph
1
The categories of this paper are: cs
22
The categories of this paper are: chao-dyn
14
The categories of this paper are: math-ph
37
The categories of this paper are: supr-con
15
The categories of this paper are: nucl-ex
13
The categories of this paper are: quant-ph
16
The categories of this paper are: stat
25
The categories of this paper are: patt-sol