Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Anomalous Diffusion in a Bench-Scale Pulsed Fluidized Bed   We present our analysis on micro-rheology of a bench-scale pulsed fluidized
bed, which represents a weakly confined system. Non-linear gas-particle and
particle-particle interactions resulting from pulsed flow are associated with
harmonic and sub-harmonic modes. While periodic structured bubble patterns are
observed at the meso-scale, particle-scale measurements reveal anomolous
diffusion in the driven granular medium. We use single-particle tracks to
analyze ergodicity and ageing properties at two pulsing frequencies having
remarkably different meso-scale features. The scaling of ensemble-averaged mean
squared displacement is not unique. The distribution of time-averaged mean
squared displacements is non-Gaussian, asymmetric and has a finite trivial
contribution from particles in crowded quasi-static surroundings. Results
indicate weak ergodicity breaking which along with ageing characterize the
non-stationary and out-of-equilibrium dynamics.

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The categories of this paper are: hep-lat
31
The categories of this paper are: ao-sci
14
The categories of this paper are: math-ph
22
The categories of this paper are: chao-dyn
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The categories of this paper are: stat
18
The categories of this paper are: econ
1
The categories of this paper are: cs
2
The categories of this paper are: math
30
The categories of this paper are: q-alg
8
The categories of this paper are: hep-ex
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The categories of this paper are: dg-ga
5
The categories of this paper are: gr-qc
21
The categories of this paper are: adap-org
35
The categories of this paper are: mtrl-th
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The categories of this paper are: eess
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The categories of this paper are: acc-phys