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removed Category:Concepts in physics; added Category:Equations of physics using HotCat |
→Relation to thermodynamic variables: Added an expression for heat capacity via the temperature derivative of entropy. |
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: <math>A = \langle E\rangle -TS= - k_B T \ln Z.</math>
Furthermore, the heat capacity can be expressed as
: <math>C_v = T \frac{\partial S}{\partial T} = -T \frac{\partial^2 A}{\partial T^2}.</math>
=== Partition functions of subsystems ===
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