Notes

Some of my notes on various topics.

Kramers Wannier duality [PDF]

Free fermions and spin chains [PDF]

The epsilon expansion [PDF]

What is the Bethe ansatz? [PDF]

Introduction to stochastic calculus [PDF]

The self avoiding walk as a critical phenomenon [PDF]

Gaussian functional integrals [PDF]

Chaos in random neural networks [PDF]

The cavity method in random matrix theory [PDF]

Principal component analysis and spike sorting [PDF]

First passage times [PDF]