The Yang-Lee edge singularity on Feynman diagrams

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


We investigate the Yang-Lee edge singularity on non-planar random graphs, which we consider as the Feynman diagrams of various d = 0 field theories, in order to determine the value of the edge exponent s. We consider the hard dimer model on f3 and f4 random graphs to test the universality of the exponent with respect to coordination number, and the Ising model in an external field to test its temperature independence. The results here for generic ('thin') random graphs provide an interesting counterpoint to the discussion by Staudacher of these models on planar random graphs.

Original languageEnglish
Pages (from-to)5641-5649
Number of pages9
JournalJournal of Physics A: Mathematical and General
Issue number26
Publication statusPublished - 3 Jul 1998


Dive into the research topics of 'The Yang-Lee edge singularity on Feynman diagrams'. Together they form a unique fingerprint.

Cite this