We provide analytical expressions for the second virial coefficients of hard, convex, monoaxial solids of revolution in ${ \mathbb{ R}^{ 4}}$. The excluded volume per particle and thus the second virial coefficient is calculated using quermassintegrals and rotationally invariant mixed volumes based on the Brunn-Minkowski theorem. We derive analytical expressions for the mutual excluded volume of four-dimensional hard solids of revolution in dependence on their aspect ratio $\nu$ including the limits of infinitely thin oblate and infinitely long prolate geometries. Using reduced second virial coefficients $B_2^{ \ast}=B_2/V_{ \mathrm{ P}}$ as size-independent quantities with $V_{ \mathrm{ P}}$ denoting the $D$-dimensional particle volume, the influence of the particle geometry to the mutual excluded volume is analyzed for various shapes. Beyond the aspect ratio $\nu$, the detailed particle shape influences the reduced second virial coefficients $B_2^{ \ast}$. We prove that for $D$-dimensional spherocylinders in arbitrary-dimensional Euclidean spaces ${ \mathbb{ R}^{ D}}$ their excluded volume solely depends on at most three intrinsic volumes, whereas for different convex geometries $D$ intrinsic volumes are required. For $D$-dimensional ellipsoids of revolution, the general parity $B_2^{ \ast}(\nu)=B_2^{ \ast}(\nu^{ -1})$ is proven.
Categories: cond-mat.stat-mech cond-mat.soft