You can find descriptions of them in quantum field theory books though.

Some approaches to quantum field theory are more popular than others.

In the context of quantum field theory, however, solutions can be found.

The answer to this question takes the discussion deep into the realm of quantum field theory.

Following the development of quantum field theory the ambiguity disappeared.

He is also an expert in beyond standard model physics and quantum field theory.

In his early career he worked on quantum field theory of elementary particles.

Such is the case for the partition function in quantum field theory.

His main area of interest was quantum field theory.

This is only in analogy to quantum field theory and should not be taken literally.

In quantum field theory, one must sum over all possible histories of a system.

The S-matrix in quantum field theory is used to do exactly this.

An introduction including more on general relativity and quantum field theory than most.

These integrals turn up in subjects such as quantum field theory.

The situation is very different in supersymmetric quantum field theories.

Quantum field theory has been developed to describe the elementary particles.

My question is: I have a significantly different, conceptually simple new approach to quantum field theory.

Through this experience I became interested in particle physics and quantum field theory.

This question is particularly vexing in relation to quantum field theory.

In quantum field theory, the vacuum state may be degenerate.

This concept is important for working with correlation functions in quantum field theory.

The situation in quantum field theory is rather different: the expectation value of the energy density can be negative at any given point.

The starting point of these approaches is the relativistic quantum field theory.

The path integral formulation was very important for the development of quantum field theory.

However, they have strong connections with quantum field theory and statistical mechanics.