109 citations · 432 across the 27 of their papers we have counts for
6 papers · 1 filter
Quantum gravity of Kerr-Schild spacetimes and the logarithmic correction to Schwarzschild black hole entropy
Basem Kamal El-Menoufi
In the context of effective field theory, we consider quantum gravity with minimally coupled massless particles. Fixing the background geometry to be of the Kerr-Schild type, we fu…
Inflationary magnetogenesis and non-local actions: The conformal anomaly
Basem Kamal El-Menoufi
We discuss the possibility of successful magnetogenesis during inflation by employing the one-loop effective action of massless QED. The action is strictly non-local and results fr…
Covariant non-local action for massless QED and the curvature expansion
John F. Donoghue, Basem Kamal El-Menoufi
We explore the properties of non-local effective actions which include gravitational couplings. Non-local functions originally defined in flat space can not be easily generalized t…
The Equivalence Principle in a Quantum World
N. E. J. Bjerrum-Bohr, John F. Donoghue, Basem Kamal El-Menoufi +3
We show how modern methods can be applied to quantum gravity at low energy. We test how quantum corrections challenge the classical framework behind the Equivalence Principle, for…
The axial anomaly, dimensional regularization and Lorentz-violating QED
Basem Kamal El-Menoufi, G. A. White
In order to treat loops in the Lorentz-violating QED model, we present a derivation of the QED axial anomaly that specifically highlights the infrared origin of the effect. This is…
QED trace anomaly, non-local Lagrangians and quantum Equivalence Principle violations
John F. Donoghue, Basem Kamal El-Menoufi
We discuss the derivation of the trace anomaly using a non-local effective action at one loop. This provides a simple and instructive form and emphasizes infrared physics. We then…