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Physics · self-study course

Analytical and statistical mechanics

Use Lagrangian and Hamiltonian methods, then interpret canonical ensembles.

3 lessons24 quiz questionsAdvanced university

Your learning path

  1. 01

    Euler-Lagrange equations and constraints

    For L(q,qdot,t), stationarity of S=∫L dt with fixed endpoints yields d/dt(∂L/∂qdot)−∂L/∂q=0.

    Advanced university · Notes · 8 questions
  2. 02

    Hamilton equations, phase space and Poisson brackets

    For a regular Lagrangian, p=∂L/∂qdot and H=p qdot−L after expressing qdot in terms of q,p,t.

    Advanced university · Notes · 8 questions
  3. 03

    Canonical ensembles and partition functions

    For a system at inverse temperature β=1/(kBT), the canonical probability of a microstate of energy E is exp(−βE)/Z.

    Advanced university · Notes · 8 questions