Stony Brook University, Department of Physics and Astronomy

PHY 308/578: QUANTUM PHYSICS

 

Spring 2006

 

A. Initial Information

Instructor:   Konstantin Likharev

          Office: Physics B-135

Phone: 2-8159

E-mail: klikharev@notes.cc.sunysb.edu

          Office hours: Thursday 4:30 to 6:30 pm

 

Grader:  Ying Xu

          Office: D-120

          Phone: 2-4711

          E-mail: yixu@ic.sunysb.edu

          Office hours: Wednesday 2:00 to 3:00 pm

 

Web site: http://rsfq1.physics.sunysb.edu/~likharev/308/S06/

 

Textbook:  S. Gasiorowicz, Quantum Physics, 3rd ed., Wiley, 2003

ISBN #0-471-0570002 (available in the campus bookstore)

         

Additional Reading From:

          D. J. Griffiths, Introduction to Quantum Mechanics, 2nd ed., Upper Saddle River, 2005.

          R. L. Liboff, Introductory Quantum Mechanics, 3rd ed., Addison-Wesley, 1998.


Lectures:
Mon-Wed-Fri 9:35-10:30 am, Physics P-116

 

Homeworks: Weekly (with just a few exceptions)

 

Exams: Midterm (March 15, 9:35 – 10:30 am) and Final (May 12, 8:00 – 10:30 am)

 

Grade Components:           

          Homeworks: 30%

          Midterm: 20%

          Final exam: 50%

 

Student Feedback:  highly appreciated (anonymous notes OK)

 

Course Syllabus (with approximate lecture count):

         

          1. Introduction (5 lectures): Course review. Summary of classical mechanics. Major experimental foundations of quantum mechanics (Planck’s radiation law, the photoelectric effect, the Compton effect, electron diffraction, Bohr’s atom). The de Broglie pilot wave idea.

 

          2. Free 1D particle (2 lectures): Sine wavefunction. Wavefunction interpretation. Wave packets, phase and group velocities, packet dispersion and its classical analog.

 

          3. 1D Schrödinger equation (2 lectures): Free particle description, potential energy description, momentum operation, Heisenberg’s uncertainty relation, probability conservation and probability flow. Eigenfunctions and eigenvalues, the general solution to the Schrödinger equation.

 

          4. Basic 1D problems (6 lectures): Infinitely deep quantum well, potential step, potential barrier and tunneling, WKB approximation (without strict derivation), quantum well of finite depth. Finite-difference method of 1D Schrödinger equation solution.

 

5. Dirac’s δ-function and its applications (6 lectures): Tunneling, resonant tunneling, weak coupling of quantum wells, metastable state decay. Time-energy uncertainty relation. Quantum measurements.

 

          6. Harmonic oscillator (4 lectures): Brute force solution, operator approach, creation and annihilation operators, coherent (Glauber) states.

 

          7. Simplest 2D and 3D problems (3 lectures): Schrödinger equation and variable separation. Infinitely deep quantum well, density of states, quantum mechanics of classically chaotic systems (semi-qualitatively). 3D  numerical methods. Finite-difference method in higher dimensions.

 

          8. Motion in central potentials (5 lectures):3D oscillator. 2D rotator. Angular momentum quantization. Angular momentum in 3D. Spherical harmonics. Dirac’s (“bra-ket”) notation. Hermite-conjugate and self-adjoint operators. Derivation of angular quantum numbers.

 

          9. Orbitals in the hydrogen atom (3 lectures): Main quantum number, energy spectrum, radial wavefunctions.

 

          10. Spin (2 lectrures): Stern-Gerlach experiments. Matrix formulation of quantum mechanics. Spinors and spin operators. Interpretation of the three-stage SG experiment.

 

         

 B. Homeworks

(links to files in pdf format)

HW #1 with Solutions

 

HW #2 with Solutions

 

HW #3 with Solutions

 

HW #4 with Solutions

 

HW #5 with Solutions

 

HW #6 with Solutions

 

HW #7 with Solutions

 

HW #8 with Solutions

 

HW #9 with Solutions

 

HW #10 with Solutions

 

HW #11 with Solutions

 

HW #12 with Solutions

 

C. Exams

(links to files in pdf format)

Midterm with Solutions

 

Final with Solutions