Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Viscoelastic scaling regimes for marginally-rigid fractal spring
  networks   A family of marginally-rigid (isostatic) spring networks with fractal
structure up to a controllable length was devised and the viscoelastic spectra
$G^{*}(\omega)$ calculated. Two non-trivial scaling regimes were observed,
(i)~$G^{\prime}\approx G^{\prime\prime}\propto\omega^{\Delta}$ at low
frequencies, consistent with $\Delta=1/2$; (ii)~$G^{\prime}\propto
G^{\prime\prime}\propto\omega^{\Delta^{\prime}}$ for intermediate frequencies
corresponding to fractal structure, consistent with a theoretical prediction
$\Delta^{\prime}=(\ln3-\ln2)/(\ln3+\ln2)$. The cross-over between these two
regimes occurred at lower frequencies for larger fractals in a manner
suggesting diffusive-like dispersion. Solid gels generated by introducing
internal stresses exhibited similar behaviour above a low-frequency cut-off,
indicating the relevance of these findings to real-world applications.

31
The categories of this paper are: ao-sci
32
The categories of this paper are: atom-ph
37
The categories of this paper are: supr-con
17
The categories of this paper are: q-fin
25
The categories of this paper are: patt-sol
6
The categories of this paper are: astro-ph
18
The categories of this paper are: econ
33
The categories of this paper are: plasm-ph
7
The categories of this paper are: hep-th
0
The categories of this paper are: hep-ph
21
The categories of this paper are: adap-org
10
The categories of this paper are: q-bio
24
The categories of this paper are: dg-ga
36
The categories of this paper are: cmp-lg
23
The categories of this paper are: solv-int
1
The categories of this paper are: cs