A rederivation of the conformal anomaly for spin-12. (16th April 2018)

• Record Type: Journal Article
• Authors: Godazgar, Hadi; Nicolai, Hermann
• Is Part Of: Classical and quantum gravity. Volume 35:Number 10(2018:May)
• Publication Date: 2018-04-16
• Subjects: gravitational anomaly -- Weyl anomaly -- conformal symmetry; Quantum gravity -- Periodicals; Gravitation -- Periodicals; Relativity (Physics) -- Periodicals; Space and time -- Periodicals; Periodicals; 521.1
• DOI: 10.1088/1361-6382/aaba97
• Languages: English
• ISSNs: 0264-9381

Abstract

Abstract: We rederive the conformal anomaly for spin- fermions by a genuine Feynman graph calculation, which has not been available so far. Although our calculation merely confirms a result that has been known for a long time, the derivation is new, and thus furnishes a method to investigate more complicated cases (in particular concerning the significance of the quantum trace of the stress tensor in non-conformal theories) where there remain several outstanding and unresolved issues.