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Foundations of Statistical Mechanics
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Module 3
Foundations of Equilibrium Statistical Mechanics
1
Phase Space, Microstates, and Macrostates
Relate phase space, microstates, and macrostates for a classical N-particle system.
2
Liouville's Theorem: Phase-Space Incompressibility
Derive Liouville's theorem from Hamilton's equations and interpret its meaning as the incompressibility of the phase-space fluid.
3
Ergodic Hypothesis: Bridging Time and Ensemble Averages
Explain the physical content of the ergodic hypothesis and its role in justifying the replacement of time averages with ensemble averages.
4
The Postulate of Equal A Priori Probabilities
State the fundamental postulate of equal a priori probabilities for an isolated system.
5
Microcanonical Ensemble and Boltzmann Entropy
Define the microcanonical ensemble (N, V, E) and derive the Boltzmann entropy S = k_B ln Ω(N, V, E).
6
Statistical Definitions of Temperature, Pressure, and Chemical Potential
Define temperature, pressure, and chemical potential as partial derivatives of entropy in the microcanonical framework.
Previous module
Kinetic Theory and the Approach to Equilibrium
Next module
The Canonical and Grand Canonical Ensembles