Abstract
In this brief report we study thermodynamic properties of noninteracting quantum gases with isotropic spin-orbit coupling. At high temperature, coefficients of virial expansion depend on both temperature $T$ and spin-orbit coupling strength $\ensuremath{\kappa}$. For strong coupling, virial expansion is applicable to the temperature region below the conventional degenerate temperature ${T}_{\mathrm{F}}$. At low temperature, specific heat is proportional to $\sqrt{T}$ in Bose gases and $T$ in Fermi gases. Temperature dependence of the chemical potential of fermions shows a different behavior when the Fermi surface is above and below the Dirac point.
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