Most of the physical laws are only approximate. The P and T symmetries are broken, the
neutrino has mass, the proton is expected to decay etc. The new discoveries usually reveal …

The aim of the book is to give an introduction to the method of QCD Spectral Sum Rules and
to review its developments. After some general introductory remarks, Chiral Symmetry, the …

It is shown that all of the usual programs for the operator expansion can be performed in
terms of string operators on the light cone; namely, the separation of contributions from large …

The AdS-CFT correspondence suggests that the Wilson loop of the large N gauge theory
with N= 4 supersymmetry in four dimensions is described by a minimal surface in AdS 5× S …

This graduate level text describes in a unified fashion the statistical mechanics of random
walks, random surfaces and random higher dimensional manifolds with an emphasis on the …

A bstract We study symmetries of quantum field theories involving topologically distinct
sectors of the field space. To exhibit these symmetries we define special gauge invariant …

This is a concise graduate level introduction to analytical functional methods in quantum
field theory. Functional integral methods provide relatively simple solutions to a wide range …

We review the theoretical developments and conceptual advances that stemmed from the
generalization of QCD to the limit of a large number of color charges, originally proposed by't …

This paper reviews various approaches used nowadays in order to understand the structure
of the ground state of the strong interaction theory, the so-called QCD vacuum. In particular …

This volume provides a self-contained introduction to applications of loop representations,
and the related topic of knot theory, in particle physics and quantum gravity. These topics are …