Quantum

Dedekind Zeta Functions and Quantum Statistical Mechanics
A paper by Paula Cohen showing a surprising relationship between the Dedekind zeta function of a number field and a C*-dynamical system. PostScript.
http://www.secamlocal.ex.ac.uk/~mwatkins/zeta/cohen.htm

Derivation of Fermi-Dirac Statistics
Provides a brief technical explanation and a derivation.
http://www.cooper.edu/engineering/projects/gateway/ee/solidmat/modlec2/node1.html

Georgia Tech University: 6107 Statistical Mechanics I
Includes information on course policies, book recommendations, lecture notes and assignments, with solutions.
http://www.physics.gatech.edu/academics/Classes/spring2002/6107/

Principles of Quantum Statistical Mechanics
A set of HTML lecture notes by Mark Tuckerman deducing the principles involving the use of the density operator.
http://www.nyu.edu/classes/tuckerman/stat.mech/lectures/lecture_13/lecture_13.html