Math 259A
Random matrices and operator algebras.
MWF 2-3 in MS7608 (subject to change)
Dimitri Shlyakhtenko,
shlyakht@math.ucla.edu MS7901.
Office hours: TBA.
This will be a course about random matrices, from the perspective of
operator algebras and free probability theory.
It turns out that certain tools from von Neumann algebras related to
free probability and ``free analysis'' are very intimately related with
the description of limit behavior of a class of random matrices.
We will discuss:
- Basic random matrix theory. Limit eigenvalue density; estimates for
largest eigenvalue. We might possibly talk about more refined eigenvalue
statistics and connections with integrable systems.
- Random matrices ``with a potential''. Related minimization problems
in potential theory. Relations with free probability theory and free
entropy. The approach via free stochastic calculus. Estimates on largest
eigenvalue. Concentration estimates.
- Multi-matrix random models and non-commutative probability theory.
Haagerup-Thorbjernsen results on norms of random matrices. Applications.
Biane-Capitaine-Guionnet estimates on free entropy.
- Combinatorics of random matrix models. Applications, e.g. using
random matrices to count alternating knots (work of Zinn-Justin and
Zuber).
We will assume that the students have basic background in functional
analysis and measure theory. Some knowledge of operator algebras will be
helpful, but not strictly speaking necessary.