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On the Relation between Wilson Action and CJT Effective Action
Giovanni Amelino-Camelia, Jean-Pierre Derendinger
A relation between Wilson action and the Cornwall-Jackiw-Tomboulis effective action, which was recently suggested by Periwal, is here derived using path-integral techniques.
Sensitivity of Astrophysical Observations to Gravity-Induced Wave Dispersion in Vacuo
G. Amelino-Camelia, John Ellis, N. E. Mavromatos +2
We discuss possible signatures of quantum gravity for the propagation of light, including an energy-dependent velocity (refractive index), dispersion in velocity at a given energy,…
T-duality for boundary-non-critical point-particle and string quantum mechanics
Giovanni Amelino-Camelia
It is observed that some structures recently uncovered in the study of Calogero-Sutherland models and anyons are close analogs of well-known structures of boundary conformal field…
Could we observe the discreteness of Quantum-Gravity length and area operators ?
Giovanni Amelino-Camelia
Several proposals for Quantum Gravity involve length and area operators with discrete eigenvalues. I show that the analyses of some simple procedures for the measurement of areas a…
Dimensionful deformations of Poincare' symmetries for a Quantum Gravity without ideal observers
Giovanni Amelino-Camelia
Quantum Mechanics is revisited as the appropriate theoretical framework for the description of the outcome of experiments that rely on the use of classical devices. In particular,…
An interferometric gravitational wave detector as a quantum-gravity apparatus
Giovanni Amelino-Camelia
As a consequence of the extreme precision of the measurements it performs, an interferometric gravitational wave detector is a macroscopic apparatus for which quantum effects are n…
On the area operators of the Husain-Kuchar-Rovelli model and Canonical/Loop Quantum Gravity
Giovanni Amelino-Camelia
I investigate the relation between an operative definition of the area of a surface specified by matter fields and the area operators recently introduced in the canonical/loop appr…