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8.044 Lecture Notes Chapter 6: Statistical Mechanics at ...

Lecture NotesChapter 6: Statistical Mechanics at Fixed Temperature(Canonical Ensemble)Lecturer: Derivation of the Canonical Ensemble .. Monatomic, classical, ideal gas, at fixedT.. Two-level systems, re-revisited .. Classical harmonic oscillators and equipartition of energy .. Quantum harmonic oscillators .. Heat capacity of a diatomic ideal gas .. Paramagnetism .. by adiabatic demagnetization .. The Third Law of Thermodynamics .. 6-42 Reading:Greytak, Notes on the Canonical Ensemble;Baierlein, Chapters 5, 13, Reading for :Greytak, Notes on (Raman Spectroscopy of) Derivation of the Canonical EnsembleIn Chapter 4, we studied the Statistical Mechanics of anisolatedsystem.

Fixing the temperature happens to be easier to analyze in practice. heat bath, T Consider a system 1 which is not isolated, but rather is in thermal contact with a heat bath 2 , and therefore held at xed temperature T equal to that of the bath. An ensemble of …

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