Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Electrical conductivity of lithium at megabar pressures   We report measurements of the electrical conductivity of a liquid alkali
metal - lithium - at pressures up to 1.8 Mbar and fourfold compression,
achieved through shock compression experiments. We find that the results are
consistent with a departure of the electronic properties of lithium from the
nearly free electron approximation at high pressures.

29
The categories of this paper are: funct-an
12
The categories of this paper are: nucl-th
15
The categories of this paper are: nucl-ex
2
The categories of this paper are: math
17
The categories of this paper are: q-fin
28
The categories of this paper are: alg-geom
24
The categories of this paper are: dg-ga
36
The categories of this paper are: cmp-lg
21
The categories of this paper are: adap-org
33
The categories of this paper are: plasm-ph
30
The categories of this paper are: q-alg
35
The categories of this paper are: mtrl-th
3
The categories of this paper are: physics
5
The categories of this paper are: gr-qc
10
The categories of this paper are: q-bio
22
The categories of this paper are: chao-dyn