Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Does (TaSe4)2I really harbor an axionic charge density wave?   A recent experimental work has reported an excess of the non-linear
conductivity in the charge density wave (CDW) sliding mode of the quasi
one-dimensional compound (TaSe4)2I, when a magnetic field is applied
co-linearly to the electric field [Gooth et al., Nature 575, 315 (2019)]. This
result has opened a conceptual approach, where the CDW gap in (TaSe4)2I is
opened between Weyl fermions of opposite chirality with the assumption that
this compound is a Weyl semi-metal in its undistorted high temperature phase.
We report measurements in the sliding state of (TaSe4)2I performed in similar
conditions. We have found no increase in the magnetoconductivity. In our
attempts for understanding this unsettling discrepancy, we stress the specific
nature of the Peierls transition in (TaSe4)2I and the strong electron-phonon
coupling present in this compound. Given the lack of further evidence, we think
that it is premature to assert that (TaSe4)2I is an axionic insulator.

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The categories of this paper are: chem-ph
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The categories of this paper are: patt-sol
2
The categories of this paper are: math
11
The categories of this paper are: hep-lat
33
The categories of this paper are: plasm-ph
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The categories of this paper are: q-fin
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The categories of this paper are: supr-con
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The categories of this paper are: cs
3
The categories of this paper are: physics
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The categories of this paper are: comp-gas
0
The categories of this paper are: hep-ph
30
The categories of this paper are: q-alg
9
The categories of this paper are: nlin
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The categories of this paper are: nucl-th
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The categories of this paper are: hep-ex
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The categories of this paper are: hep-th