Condensed matter theory is an enormous, rich, evolving field which is impossible for a single professor to explain or even describe in a single graduate course. In order to help our students navigate this varied terrain, Cornell's condensed-matter theory group has developed Basic Training in Condensed-Matter Theory, a challenging, modular course taught once per year by a rotation of four condensed-matter theorists. Students are exposed to a different set of active research areas each year, and learn sophisticated analytical and numerical methods in the extensive exercises. This year our course replaces the traditional many-body physics course 654, and will incorporate some of the tools and concepts from that field. Tentatively, we plan to cover
|Jan 21 - Feb 13||James Sethna (email@example.com, Clark 528)||Continuum Theories of Crystal Defects||Grader: Yong Chen (firstname.lastname@example.org)|
|Feb 18 - Mar 13||Erich Mueller (email@example.com, Clark 514a)||Probes of Cold Atoms||Grader: Stefan Natu (firstname.lastname@example.org)|
|Mar 25 - April 10||Craig Fennie (email@example.com, Clark 226)||Competing Ferroic orders: the magnetoelectric effect||Grader: Johannes Lischner (firstname.lastname@example.org)|
|April 15 - May 1||Eun-Ah Kim (email@example.com, Clark 507)||Quantum Criticality||Grader: Kaden Hazzard (firstname.lastname@example.org)|
For more information, please contact any of the instructors.
|Teaser 1:||Due Wednesday April 15||Teaser 1|
|Syllabus||Wednesday April 15||Syllabus|
|Syllabus||Wednesday April 15||Lecture 1|
|Homework 1:||Due May 1, 2009||Homework 1|
|Teaser 1:||Due Friday April 3||Teaser 1||Solutions|
|March 25||Lecture 1|
|April 1||Lecture 2|
|April 3||Lecture 3|
|April 8||Lecture 4|
|April 10||Lecture 5|
|Teaser 1:||Due Wednesday Feb 18||teaser1.pdf|
|Teaser 2:||Due Friday Feb 20||teaser2.pdf|
|Teaser 3:||Due Wednesday Feb 25||teaser3.pdf|
|Teaser 4:||Due Friday Feb 27||teaser4.pdf|
|Teaser 4:||Due Friday Mar 3, 2009||teaser5.pdf|
|Lecture 1:||Wednesday Feb 18||OpticalAbs.pdf|
|Lecture 2:||Wednesday Feb 20||CollectiveModes.pdf|
|Lecture 4:||Wednesday Feb 25||Helium.pdf|
|Jan 21, 2009||
Q: Why do continuum theories work?
A: Because we are interested in slow long length-scale properties.Q: What are the relevant continuum fields for any system?
A: Conserved quantities (density, energy density, momentum density) and broken symmetries (magnetism, superconducting order,...).
teaser: Why can't we run faster than the speed of sound
|Jan 22, 2009||
Q: Why are we so weak?
A: dislocations.Q: Why are we so strong?
A: composite materials.
Discussion of how to generate most general continuum free energy consistent with symmetries. Example (multiferroics). Discussion of boundary terms.
Teaser: Boundary terms can stabilize defects.