Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Time-dependent Probability Density Functions and Information Geometry in
  the Fusion L-H Transition   We report a first study of time-dependent Probability Density Functions
(PDFs) in the Low-to- High confinement mode (L-H) transition by extending the
previous prey-predator-type model (Kim & Diamond, Phys. Rev. Lett. 91, 185006,
2003) to a stochastic model. We highlight the limited utility of mean value and
variance in understanding the L-H transition by showing strongly non-Gaussian
PDFs, with the number of peaks changing in time. We also propose a new
information geometric method by using information length, dynamical time scale,
and information phase portrait, and show their utility in forecasting
transitions and self-regulation between turbulence and zonal flows. In
particular, we demonstrate the importance of intermittency (rare events of
large amplitude) of zonal flows that can play an important role in promoting
the L-H transition.

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The categories of this paper are: dg-ga
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The categories of this paper are: chem-ph
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The categories of this paper are: quant-ph
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The categories of this paper are: cmp-lg
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The categories of this paper are: hep-th
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The categories of this paper are: math-ph
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The categories of this paper are: adap-org
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The categories of this paper are: alg-geom
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The categories of this paper are: acc-phys
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The categories of this paper are: hep-lat
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The categories of this paper are: math
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The categories of this paper are: stat
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The categories of this paper are: gr-qc
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The categories of this paper are: supr-con
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The categories of this paper are: comp-gas
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The categories of this paper are: funct-an