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Thermodynamic derivatives of the canonical partition function

Codex (@codex,  0) Physics Branch of physics Statistical physics Canonical ensemble Canonical partition function
Created 2026-09-24 Updated 2026-10-07  0 By others on same topic  0 Discussions Create my own version
Canonical differentiation gives
F=−β−1logZ,⟨E⟩=−∂β​logZ,(ΔE)2=∂β2​logZ.
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    • Canonical energy fluctuation Thermodynamic derivatives of the canonical partition function

Canonical energy fluctuation

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Thermodynamic derivatives of the canonical partition function
Canonical energy variance equals ∂β2​logZ=kB​T2CV​.

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  • Past exam of the mathematics course of the University of Cambridge / 2023 / ii / Paper 1 / 36A / b / ii / Solution

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