The structure of Green functions in quantum field theory with a general state

Details The structure of Green functions in quantum field theory with a general state The structure of Green functions in quantum field theory with a general state

2007-10-30

arxiv.org/abs/0710.5652v1

Recent Developments in Quantum Field Theory, Leipzig : Allemagne (2007)

Physics

High Energy Physics

High Energy Physics - Theory

13 pages, 6 figures

Scientific paper

10.1007/978-3-7643-8736-5_10

In quantum field theory, the Green function is usually calculated as the expectation value of the time-ordered product of fields over the vacuum. In some cases, especially in degenerate systems, expectation values over general states are required. The corresponding Green functions are essentially more complex than in the vacuum, because they cannot be written in terms of standard Feynman diagrams. Here, a method is proposed to determine the structure of these Green functions and to derive nonperturbative equations for them. The main idea is to transform the cumulants describing correlations into interaction terms.

Affiliated with

Also associated with

No associations

Rating

The structure of Green functions in quantum field theory with a general state does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The structure of Green functions in quantum field theory with a general state, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The structure of Green functions in quantum field theory with a general state will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-365527