18 citations · 39 across the 8 of their papers we have counts for
4 papers · 1 filter
Tunneling of a Massless Field through a 3D Gaussian Barrier
G. Modanese
We propose a method for the approximate computation of the Green function of a scalar massless field Phi subjected to potential barriers of given size and shape in spacetime. This…
General properties of the decay amplitudes for massless particles
G. Fiore, G. Modanese
We derive the kinematical constraints which characterize the decay of any massless particle in flat spacetime. We show that in perturbation theory the decay probabilities of photon…
General Estimate for the Graviton Lifetime
G. Modanese
By means of general kinematical arguments, the lifetime of a graviton of energy for decay into gravitons is found to have the form $τ^{-1} = \frac{1}{EG} \sum_{j=1,2,...} c…
The radial gauge propagators in quantum gravity
P. Menotti, G. Modanese, D. Seminara
We give a general procedure for extracting the propagators in gauge theories in presence of a sharp gauge fixing and we apply it to derive the propagators in quantum gravity in the…