arXiv:hep-ph/0002048·v3·High Energy Physics — Phenomenology
The Massive Thermal Basketball Diagram
Jens O. Andersen🇺🇸 · Eric Braaten🇺🇸 · Michael Strickland🇺🇸
Abstract
The "basketball diagram" is a three-loop vacuum diagram for a scalar field theory that cannot be expressed in terms of one-loop diagrams. We calculate this diagram for a massive scalar field at nonzero temperature, reducing it to expressions involving three-dimensional integrals that can be easily evaluated numerically. We use this result to calculate the free energy for a massive scalar field with a phi^4 interaction to three-loop order.
Comments: 19 pages, 3 figures