This book describes the theory and selected applications of one of the most important mathematical tools used in the theoretical investigation of collective exc
A distinguished physicist and leading researcher describes the theory and selected applications of one of the most important mathematical tools used in the theo
Functional integration is one of the most powerful methods of contempo rary theoretical physics, enabling us to simplify, accelerate, and make clearer the proce
A self-contained pedagogical introduction to asymptotic safety and the functional renormalization group in quantum gravity, for graduate students and researcher