2008/08/31 by É. T. Akhmedov, Emil T. Akhmedov, P. V. Buividovich
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Noncommutative and Quantum Gravity Theories #gr-qc #hep-ph #hep-th
paper · pdf · doi:10.1103/physrevd.78.104005
published as Phys.Rev.D78:104005,2008 · 10 pages RevTeX, 1 figure. Additional arguments are given, statements are made more precise
arxiv created 2008/09/27 · openalex publication_date 2008/11/05 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/30
It is well known that there should be a total cancellation of the IR divergences in unitary interacting field theory, such as QED and gravity. The cancellation should be at all orders between loop and tree-level contributions to cross sections. This is the crucial fact related to the unitarity of the evolution operator (S-matrix) of the underlying interacting field theory. In this paper we show that such a cancellation does not happen in de Sitter space.