Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Semiquantal dynamics of fluctuations: Ostensible quantum chaos   The time-dependent variational principle using generalized Gaussian trial
functions yields a finite dimensional approximation to the full quantum
dynamics and is used in many disciplines. It is shown how these 'semi-quantum'
dynamics may be derived via the Ehrenfest theorem and recast as an extended
classical gradient system with the fluctuation variables coupled to the average
variables. An extended potential is constructed for a one-dimensional system.
The semiquantal behavior is shown to be chaotic even though the system has
regular classical behavior and the quantum behavior had been assumed regular.

23
The categories of this paper are: solv-int
15
The categories of this paper are: nucl-ex
5
The categories of this paper are: gr-qc
36
The categories of this paper are: cmp-lg
32
The categories of this paper are: atom-ph
12
The categories of this paper are: nucl-th
7
The categories of this paper are: hep-th
1
The categories of this paper are: cs
6
The categories of this paper are: astro-ph
26
The categories of this paper are: bayes-an
34
The categories of this paper are: chem-ph
17
The categories of this paper are: q-fin
28
The categories of this paper are: alg-geom
0
The categories of this paper are: hep-ph
19
The categories of this paper are: eess
14
The categories of this paper are: math-ph