# Difference between revisions of "Pressure equation"

$p^*=\frac{\beta p}{\rho}= \frac{pV}{Nk_BT} = 1 - \beta \frac{2}{3} \pi \rho \int_0^{\infty} \left( \frac{{\rm d}\Phi(r)} {{\rm d}r}~r \right)~{\rm g}(r)r^3~{\rm d}r$
where $\beta = 1/k_BT$, $\Phi(r)$ is a central potential and ${\rm g}(r)$ is the pair distribution function.