Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Second virial coefficients for helium-4 and helium-3 from accurate
  relativistic interaction potential   The second virial coefficient and the second acoustic virial coefficient for
helium-4 and helium-3 are computed for a wide range of temperatures (0.5 -
1000K) using a highly accurate nonrelativistic interaction potential [M.
Przybytek et al., Phys. Rev. Lett. 119, 123401 (2017)] and recalculated
relativistic and quantum-electrodynamic components. The effects of the
long-range retardation and of the nonadiabatic coupling of the nuclear and
electronic motion are also taken into account. The results of our calculations
represent at least fivefold improvement in accuracy compared to the previous ab
initio work. The computed virial coefficients agree well with the most accurate
recent measurements but have significantly smaller uncertainty.

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The categories of this paper are: hep-th
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The categories of this paper are: quant-ph
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The categories of this paper are: gr-qc
25
The categories of this paper are: patt-sol
1
The categories of this paper are: cs
20
The categories of this paper are: acc-phys
27
The categories of this paper are: comp-gas
11
The categories of this paper are: hep-lat
31
The categories of this paper are: ao-sci
24
The categories of this paper are: dg-ga
15
The categories of this paper are: nucl-ex
30
The categories of this paper are: q-alg
10
The categories of this paper are: q-bio
19
The categories of this paper are: eess
28
The categories of this paper are: alg-geom
37
The categories of this paper are: supr-con