1998/08/31 by Anton Rebhan, Rebhan, Anton
Physics and Astronomy · #Cosmology and Gravitation Theories #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Pulsars and Gravitational Waves Research #Solar and Space Plasma Dynamics #hep-ph
paper · pdf · doi:10.48550/arxiv.hep-ph/9808480
7 pages two-column REVTEX, 7 postscript figures; talk given at the 5th International Workshop on Thermal Field Theories and Their Applications, Regensburg, 10 - 14 August 1998 (minor corrections)
openalex publication_date 1998/08/31 · arxiv created 1998/09/21 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The convergence properties of the resummed thermal perturbation series for the thermodynamic pressure are investigated by comparison with the exact results obtained in large-N phi4 theory and possibilities for improvements are discussed. By going beyond conventional resummed perturbation theory, renormalization has to be carried out nonperturbatively yet consistently. This is exemplified in large-N phi44 and in a special large-N ϕ36 model that mimics QED in the limit of large flavour number.