This module introduces some fundamental concepts in analytical dynamics, and illustrates their applications to relevant problems. The module covers the calculus of variations, Lagrangian and Hamiltonian formulations of dynamics, Poisson brackets, canonical transformations, and Hamilton-Jacobi equations. The approach is necessarily mathematical and students are advised to take this optional module only if they have got marks of at least 60% in both PHY1021 Vector Mechanics and PHY1026 Mathematics for Physicists (or in equivalent modules in other departments).
Module pre-requisites: PHY1026 and PHY1021 or equivalent modules.
This module will be of interest to students wishing to develop their grasp of theoretical physics. The subject of analytical dynamics provides advanced theoretical developments which prove elegant and versatile in solving dynamical problems.
INTENDED LEARNING OUTCOMES (ILOs) (see assessment section below for how ILOs will be assessed)
A student who has passed this module should be able to:
Module Specific Skills and Knowledge:
1. solve advanced dynamical problems involving classical particles by applying the Lagrangian and Hamiltonian formulations;
2. explain the calculus of variations and apply it to the solution of problems;
3. state the Hamilton-Jacobi equations and apply them to the solution of problems;
4. describe the relationship between poisson brackets and quantum mechanical commutation relations;
5. describe the basic concepts of chaos theory and explain how chaos theory may be used in different disciplines;
Discipline Specific Skills and Knowledge:
6. formulate mathematical descriptions of physical systems;
Personal and Key Transferable / Employment Skills and Knowledge:
7. use mathematics to solve problems.
SYLLABUS PLAN - summary of the structure and academic content of the module
I. Generalized coordinates. Holonomic and nonholonomic constraints
II. Virtual displacement. D'Alembert's principle
III. The Lagrangian formulation
IV. The Hamiltonian formulation
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Configuration space; generalized (canonical or conjugate) momentum
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Phase space
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Legendre transformation
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Hamiltonian; Hamilton's equations
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Cyclic co-ordinates and conservation theorems
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Liouville's theorem
V. Calculus of variations
VI. Poisson brackets
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Lagrange brackets
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Poisson brackets
VII. Hamilton-Jacobi equations and action-angle variables
VIII. The transition to quantum mechanics
IX. Nonlinear Dynamical Systems
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Chaos and its relevance to mechanics
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The stability of non-linear equations
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The non-linear oscillator
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Phase-Space Methods
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The pendulum revisited
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Mappings
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Characterisation of chaotic systems