Constructive Field Theory in Zero Dimension
Abstract
In this pedagogical note we propose to wander through five different methods to compute the number of connected graphs of the zero-dimensional φ4 field theory,in increasing order of sophistication. The note does not contain any new result but may be helpful to summarize the heart of constructive resummations, namely a replica trick and a forest formula.
0
Turn this paper into a lesson
ArcXiv compiles a structured reading guide from this paper's metadata: plain-English importance, contributions, prerequisite concepts, which sections to read first, flashcards, and a quiz. Grounded in the abstract, never invented.