PHYS326-20S1 (C) Semester One 2020

# Classical Mechanics and Symmetry Principles

15 points

Details:
 Start Date: Monday, 17 February 2020 End Date: Sunday, 21 June 2020
Withdrawal Dates
Last Day to withdraw from this course:
• Without financial penalty (full fee refund): Friday, 28 February 2020
• Without academic penalty (including no fee refund): Friday, 29 May 2020

## Description

The Lagrangian and Hamiltonian formulations of classical mechanics which provide essential preparation for all advanced courses in theoretical physics. Techniques learned have wide use in advanced quantum mechanics, quantum field theory, general relatively, particle physics and statistical mechanics.

## Learning Outcomes

In this course students will embark on a voyage of discovery of the deep theoretical principles
that underlie Newtonian and relativistic mechanics, and to appreciate why the laws
of physics are the way they are. They will learn new ways of thinking about the physical
world which allow deeper appreciation of the links between the classical and quantum
regimes.

Armed with the powerful techniques of Lagrangian and Hamiltonian dynamics, and Cartesian
tensors, students will have the tools to simplify complex mechanical problems to their
basic elements. With elegant symmetry principles such as Noether’s theorem they will
understand the deep connection between symmetries of spacetime and conservation laws,
seeing how, for example, Kepler’s second law follows from rotational symmetry and conservation
of angular momentum. They will apply this new understanding to a variety of
physical systems, from coupled oscillators to particles moving in electromagnetic fields.
Finally they will discover how the symmetries of special relativity are most succinctly described
with the language of 4-vectors, and derive the Lorentz group from the Principle of
Relativity.

This course is the basis for all advanced courses in theoretical physics.

OUTLINE
* Dynamical systems – definitions. Constrained systems. Lagrange’s equations.
* Principle of least action. Euler-Lagrange equations.
* Symmetries, conservation laws and Lie groups. Noether’s theorem.
* Oscillations: linearization. The linear chain.
* Hamiltonian formulation. Legendre’s transformation.
* Transformation theory. Canonical transformations. Generating functions. Poisson
brackets.
* Hamilton-Jacobi method. Physical applications: (e.g. wave mechanics and Schr¨odinger’s
equation).
* Special relativity: Kinematics, symmetries and Lagrangian formulation

## Pre-requisites

(1) PHYS202 or
PHYS205; (2) PHYS203; (3) MATH201 RP: MATH202 and MATH203

## Timetable 2020

Students must attend one activity from each section.

Activity Day Time Location Weeks Lecture A 01 Tuesday 14:00 - 15:00 Live Stream Available (24/3, 21/4-26/5)Psychology - Sociology 252 Lecture Theatre (18/2-17/3) 17 Feb - 29 Mar 20 Apr - 31 May Lecture B 01 Monday 12:00 - 13:00 Live Stream Available (23/3, 20/4, 4/5-25/5)Psychology - Sociology 252 Lecture Theatre (17/2-16/3) 17 Feb - 29 Mar 20 Apr - 26 Apr 4 May - 31 May Tutorial A 01 Wednesday 10:00 - 11:00 A7 (19/2)A7 (26/2-25/3) 17 Feb - 29 Mar 20 Apr - 31 May

## Examination and Formal Tests

Activity Day Time Location Weeks Test A 01 Tuesday 14:00 - 16:00 Online Delivery 27 Apr - 3 May

## Assessment

Assessment Due Date Percentage  Description
Final Exam 65%
Problem Sets 20% The best 4 out of 5 willl count.
Test 15%

## Textbooks / Resources

#### Required Texts

Goldstein, Herbert , Poole, Charles P., Safko, John L; Classical mechanics; 3rd ed; Addison Wesley, 2002.

Arnold, V. I; Mathematical methods of classical mechanics; 2nd ed.; Springer-Verlag, 1989.

I. Percival and D. Richards,; Introduction to Dynamics; Cambridge University Press, 1982.

L. Landau and E. Lifschitz,; Mechanics; 3rd Edition; Pergamon, 1976.

Saletan, Eugene J. , Cromer, Alan H; Theoretical mechanics; Wiley, 1971.

T.L. Chow; Classical Mechanics; Wiley, New York,, 1995.

D.E. Bourne and P.C. Kendall, Vector Analysis and Cartesian Tensors, 3rd ed, (CRC Press 2002), chapter 8, [for Orthogonal Transformations in §3 only].

D.W. Jordan and P. Smith, Nonlinear Ordinary Differential Equations, 4th ed. (Oxford
University Press, 2007) chapters 1,2 [for §4. Oscillations only]

N.A. Doughty, Lagrangian Interaction, (Addison Wesley, Sydney, 1990), chapters 12,13
[for §6. Special Relativity only].

## Indicative Fees

Domestic fee \$900.00

International fee \$4,250.00

* Fees include New Zealand GST and do not include any programme level discount or additional course related expenses.

For further information see School of Physical & Chemical Sciences on the department and colleges page.

## All PHYS326 Occurrences

• PHYS326-20S1 (C) Semester One 2020