Spring 2020 Prof. Alex Demkov Syllabus (updated/tentative) Lecture Notes (in pdf): Born-Oppenheimer Approximation Electron in periodic potential #1 Electron in periodic potential #2 Electron in periodic potential #3 heisenberg and hubbard hamiltonians heitler london_vs_molecular orbitals Crystal Lecture 16 optical modes Lecture 17 square lattice Lecture 18 quantum crystal Lecture 19 Einstein Debye Lecture 20 Empty lattice approximation Homework (in pdf): Homework #1 | Solutions Homework #2 | Solutions Homework #3 Homework #4 | Solutions Homework #5 | Solutions Midterm 2 Homework #6 Final (due 19 May) |