1997/12/05 by M. E. Carrington, M. Carrington, R. Kobes · 2 citations
Computer Science · Mathematics · Physics and Astronomy · #Graph theory and applications #Theoretical and Computational Physics #Topological and Geometric Data Analysis #hep-ph
paper · pdf · doi:10.1103/physrevd.57.6372
published as Phys.Rev. D57 (1998) 6372-6385 · 28 pages, 20 figures included, uses RevTeX and epsf, also available at http://theory.uwinnipeg.ca/users/randy/webfiles/diag.uu
arxiv created 1997/12/05 · openalex publication_date 1998/05/15 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
In some cases, an important example being at finite temperature, extreme infrared, collinear, or light-cone behavior may cause the usual loop expansion to break down. For some of these cases higher order ladder graphs can become important. In an earlier paper it was shown that, given a particular relation between a vertex and a self-energy function, the resummation of the ladder graphs simplifies significantly when other types of graphs are included in a consistent effective expansion. In this paper we show that this assumed relation is valid for a large class of vertex and self-energy functions at finite temperature.