Introduced as a quantum extension of Maxwell's classical theory, quantum electrodynamics has been the first example of a Quantum Field Theory (QFT). Eventually,

Describes particle physics and critical phenomena in statistical mechanics in a unified framework, incorporating graduate lecture notes from the 1970s and 1980s

Simple random walks - or equivalently, sums of independent random vari ables - have long been a standard topic of probability theory and mathemat ical physics.

This volume links field theory methods and concepts from particle physics with those in critical phenomena and statistical mechanics, the development starting f

The successful calculation of critical exponents for continuous phase transitions is one of the main achievements of theoretical physics over the last quarter-c