57 citations · 245 across the 17 of their papers we have counts for
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Spectral Geometry and Quantum Gravity
Giampiero Esposito
Recent progress in quantum field theory and quantum gravity relies on mixed boundary conditions involving both normal and tangential derivatives of the quantized field. In particul…
New Results in One-Loop Quantum Cosmology
Giampiero Esposito, Alexander Yu. Kamenshchik
A crucial problem in quantum cosmology is a careful analysis of the one-loop semiclassical approximation for the wave function of the universe, after an appropriate choice of mixed…
Quantum Cosmology and Grand Unification
Giampiero Esposito, Alexander Yu. Kamenshchik, Gennaro Miele
Quantum cosmology may restrict the class of gauge models which unify electroweak and strong interactions. In particular, if one studies the normalizability criterion for the one-lo…
Universal Functions in Euclidean Quantum Gravity
Ivan G. Avramidi, Giampiero Esposito
A key problem in the attempt to quantize the gravitational field is the choice of boundary conditions. These are mixed, in that spatial and normal components of metric perturbation…
Multimomentum Maps on Null Hypersurfaces
Giampiero Esposito, Cosimo Stornaiolo
This paper studies the application of multimomentum maps to the constraint analysis of general relativity on null hypersurfaces. It is shown that, unlike the case of spacelike hype…