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Journal Article

A rederivation of the conformal anomaly for spin-1/2

MPS-Authors
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Godazgar,  Hadi
Quantum Gravity & Unified Theories, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

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Nicolai,  Hermann
Quantum Gravity & Unified Theories, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

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Fulltext (public)

1801.01728.pdf
(Preprint), 234KB

CQG._35_105013.pdf
(Publisher version), 972KB

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Citation

Godazgar, H., & Nicolai, H. (2018). A rederivation of the conformal anomaly for spin-1/2. Classical and Quantum Gravity, 35(10): 105013. doi:10.1088/1361-6382/aaba97.


Cite as: http://hdl.handle.net/21.11116/0000-0000-BA5A-A
Abstract
We rederive the conformal anomaly for spin-1/2 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.