Quantum field theory describes basic physical phenomena over an
extremely wide range of length or energy scales. Quantum fields exist in
space and time, which can be approximated by a set of lattice points.
This book presents a comprehensive and coherent account of the theory of
quantum fields on a lattice, an essential technique for the study of the
strong and electroweak nuclear interactions. After introductory chapters
on scalar fields, gauge fields and fermion fields, the book studies
quarks and gluons in QCD and fermions and bosons in the electroweak
theory. The last chapter is devoted to numerical simulations algorithms
that have been used in recent large-scale numerical simulations. The
book will be valuable for graduate students and researchers in
theoretical physics, elementary particle physics, and field theory, as
well as non-perturbative approximations and numerical simulations of
quantum field phenomena.