Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Numerical Study of Universal Conductance Fluctuation in
  Three-dimensional Topological Semimetals   We study the conductance fluctuation in topological semimetals. Through
statistic distribution of energy levels of topological semimetals, we determine
the dominant parameters of universal conductance fluctuation (UCF), i.e., the
number of uncorrelated bands $k$, the level degeneracy $s$, and the symmetry
parameter $\beta$. These parameters allow us to predict the zero-temperature
intrinsic UCF of topological semimetals by the Altshuler-Lee-Stone theory.
Then, we obtain numerically the conductance fluctuations for topological
semimetals of quasi-1D geometry. We find that for Dirac/Weyl semimetals, the
theoretical prediction coincides with the numerical results. However, a
non-universal conductance fluctuation behavior is found for topological nodal
line semimetals, i.e., the conductance fluctuation amplitude increases with the
enlargement of SOC strength. We find that such unexpected parameter-dependent
phenomena of conductance fluctuation are related to Fermi surface shape of 3D
topological semimetals. These results will help us to understand the existing
and future experimental results of UCF in 3D topological semimetals.

1
The categories of this paper are: cs
14
The categories of this paper are: math-ph
13
The categories of this paper are: quant-ph
37
The categories of this paper are: supr-con
10
The categories of this paper are: q-bio
33
The categories of this paper are: plasm-ph
7
The categories of this paper are: hep-th
18
The categories of this paper are: econ
32
The categories of this paper are: atom-ph
3
The categories of this paper are: physics
20
The categories of this paper are: acc-phys
29
The categories of this paper are: funct-an
30
The categories of this paper are: q-alg
6
The categories of this paper are: astro-ph
9
The categories of this paper are: nlin
22
The categories of this paper are: chao-dyn