Consider the ideal ultrarelativistic gas Hamiltonian $\mathbf{H = }\sum_{i = 1}^N \mathbf{c |\vec{p_{i}}|}$, now if we let molecules to interact with a potential term like $\mathbf{d|\vec{q_{i}}|}$; is it still possible to find density of states $\omega(E)$?
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If the system is at equilibrium then $w$ is proportional to $\exp(-\beta H)$. This result is independent of the specific form of $H$. |
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