# MPhys Physics / Course details

Year of entry: 2021

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## Course unit details:Mathematical Fundamentals of Quantum Mechanics

Unit code PHYS30201 10 Level 3 Semester 1 Department of Physics & Astronomy No

### Overview

Mathematical Fundamentals of Quantum Mechanics (M)

### Pre/co-requisites

Unit title Unit code Requirement type Description
Linear Algebra B MATH10212 Pre-Requisite Compulsory
Introduction to Quantum Mechanics PHYS20101 Pre-Requisite Compulsory
Fundamentals of Solid State Physics PHYS20252 Pre-Requisite Recommended
Complex Variables and Vector Spaces PHYS20672 Pre-Requisite Compulsory

### Aims

To develop an understanding of quantum mechanics and in particular the mathematical structures underpinning it.

### Learning outcomes

This course unit detail provides the framework for delivery in 21/22 and may be subject to change due to any additional Covid-19 impact.  Please see Blackboard / course unit related emails for any further updates

On completion of the course, successful students should be able to:
1. Use Dirac notation to represent quantum-mechanical states and manipulate operators in terms of their matrix elements.
2. Solve a variety of problems with model and more realistic Hamiltonians, demonstrating an ability to use the mathematical underpinning of quantum mechanics.
3. Work with angular momentum operators and their eigenvalues both qualitatively and quantitatively.
4. Use perturbation theory and other methods to find approximate solutions to problems in quantum mechanics, including the fine-structure of energy levels of hydrogen.

### Syllabus

1. The Fundamentals of Quantum Mechanics (6 lectures)

Postulates of quantum mechanics

Time evolution: the Schrödinger equation and the time evolution operator

Ehrenfest’s theorem and the classical limit

The simple harmonic oscillator: creation and annihilation operators

Composite systems and entanglement

1. Angular Momentum (7 lectures)

General properties of angular momentum

Electron spin and the Stern-Gerlach experiment

Higher spins

Vector Operators

1. Approximate methods I: variational method and WKB (3 lectures)

Variational methods

WKB approximation for bound states and tunneling

1. Approximate methods II: Time-independent perturbation theory (5 lectures)

Non-degenerate and degenerate perturbation theory

The fine structure of hydrogen

External fields: Zeeman and Stark effect in hydrogen

1. The Einstein-Poldosky-Rosen “paradox” and Bell’s inequalities (1 lecture)

### Assessment methods

Method Weight
Written exam 100%

### Feedback methods

Feedback will be available on students’ solutions to examples sheets through examples classes, and model answers will be issued.

Shankar, R. Principles of Quantum Mechanics 2nd ed. (Plenum 1994)
Gasiorowicz, S. Quantum Physics, 3rd ed. (Wiley, 2003)
Mandl, F. Quantum Mechanics (Wiley, 1992)
Griffths, D. J. Introduction to Quantum Mechanics, 2nd ed (CUP, 2017)

### Study hours

Scheduled activity hours
Assessment written exam 1.5
Lectures 22
Independent study hours
Independent study 76.5

### Teaching staff

Staff member Role
Michael Birse Unit coordinator