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Inducing the Einstein action in QCD-like theories
John F. Donoghue, Gabriel Menezes
We evaluate the induced value of Newton's constant which would arise in QCD. The ingredients are modern lattice results, perturbation theory and the operator product expansion. The…
Quartic propagators, negative norms and the physical spectrum
John F. Donoghue
Many arguments against quartic propagators, negative norm states and related effects concern the sicknesses which occur when the spectrum of the free particle Hamiltonian is formed…
Illuminating Light Bending
N. E. J. Bjerrum-Bohr, Barry R. Holstein, John F. Donoghue +2
The interactions of gravitons with spin-1 matter are calculated in parallel with the well known photon case. It is shown that graviton scattering amplitudes can be factorized into…
EPFL Lectures on General Relativity as a Quantum Field Theory
John F. Donoghue, Mikhail M. Ivanov, Andrey Shkerin
These notes are an introduction to General Relativity as a Quantum Effective Field Theory, following the material given in a short course on the subject at EPFL. The intent is to d…