PH312 : Quantum Mechanics І

Department

Physics

Academic Program

Bachelor in Physics

Type

Compulsory

Credits

03

Prerequisite

MA201PH212PH317

Overview

This course provides an introduction to the concepts and formalism of quantum mechanics at the intermediate level of a bachelor's degree program. Which is based on a number of postulates provide a formal discussion of axioms, and how they can be used to extract quantitative information about precise physical systems. Quantum mechanics investigates the behavior of microscopic particles such as electrons and other tiny particles in atoms, molecules, and solids, as well as in external electromagnetic fields. The primary focus is on the independent and time-dependent Schrödinger equation after a comprehensive treatment of bound and unbound states in one dimension, and its applications to simple systems such as the harmonic oscillator, potential barrier, potential delta function, and the hydrogen atom without spin. The assumptions of quantum mechanics will be developed in the formalism of the observed operators that affect the space of the linear wave function, by analogy with finite-dimensional matrix operations on vectors.

Intended learning outcomes

By the end of studying this course the student will be able to:1- Describe the basic concepts of quantum mechanics.2- Explains the basic postulates of quantum mechanics and its various tools and concepts (the wave function, Schrödinger equation, Hermetic effects, eigenvalues (distinctive).3- The wave function is used to calculate the expected values of physical quantities such as position and momentum using influences.4- Describes the motion of any particle according to the concepts of quantum mechanics.5- Solve particle motion problems using Dirac (Ket-Bra) symbols in various forms of quantum mechanics.6- Schrödinger's equation is applied to some physical phenomena.7- Distinguish the wave functions that fulfill the conditions of quantum mechanics.8- Solve the dependent and non-time dependent Schrödinger equation.9- Explain Heisenberg's principle of inaccuracy.10- Solve problems and exercises related to the course.

Teaching and learning methods

1- Lectures.

2- Solve problems and discuss various exercises.

Methods of assessments

1- Written first midterm exam 25%

2- Written second midterm exam 25%

3- Written final exam 50%

4- A passing score of 50% or more

5- The total assessment of the course is 100%.

Course contents

Week Due

exercises

Lectures

contact hours

Topics List

1

2

2

4

Mathematical Supplement: Dirac delta function, Heaviside step function and Sign Function, Fourier and inverse Fourier integral transforms, Parseval’s theorem.

1

2

2

4

The origins of quantum theory: Overview on black body radiation, photoelectric effect and Compton effect.

1

2

2

4

Wave-Particle Duality: De Broglie’s hypothesis and the wave properties of matter, Propagation and spreading of wave packets, Concept of group velocity for wave packets, Free-particle propagator.

1

2

2

4

The wave function and Schrodinger equation: Time-dependent Schrodinger equation (TDSE), Dynamical variables and operators, Born’s interpretation of the wave function, Conservation of probability, Probability current density and continuity equation, The momentum-space wave function and its probabilistic interpretation. Expectation values.

2

4

4

8

Heisenberg Uncertainty Principle: The position-momentum uncertainty principle, Time-energy uncertainty relation and the meaning of the uncertainty in time, Ehrenfest’s theorem in one dimension, Linear operators and eigenvalue equations.

2

4

4

8

Separation of Variables for TDSE: Stationary-state solutions and their properties, Bound and unbound states, Orthonormalization of bound-state and unbound-state eigenfunctions, General solution of the TDSE for time-independent potentials, The interpretation and computation of the expansion coefficients in the general solution of the TDSE, Schrodinger equation in momentum space.

2

4

4

8

Hermitian operators: Definition and properties of Hermitian operators, Commutators and commutation relations, Algebra of commutators, Time development of expectation values and the constants of motion, The generalized uncertainty relation.

2

4

4

8

Illustrative Examples: Infinite well potential, Step potential, Barrier potential, Tunnelling effect, The Finite square well potential, The delta-function potential, Linear harmonic oscillator, Hermite polynomials and their properties, A particle in a potential box and degenerate states, The three-dimensional harmonic oscillator.

2

4

4

8

Angular momentum: Orbital angular momentum L in Cartesian and spherical coordinates, Commutators of angular momentum components, Eigenvalues and eigenfunctions of L2 and Lz , Spherical harmonics and their properties, Particle on a sphere and the rigid rotator, Quantum ring

Learning Resources

Text Book

Reference's name

publisher

Release

Author

2nd edition, 2000

Pearson Education

B. H. Bransden and C. J. Joachain

Quantum Mechanics

Additional References

2004

Kluwer Academic Publishers

A. Ghatak and S. Lokanathan

Quantum Mechanics: Theory and Applications

4th edition, 2002

Addison-Wesley

R. Liboff

Introductory Quantum Mechanics

3rd edition, 2003

Wiley International edition

S. Gasiorowicz

Quantum Physics