242 citations · 1.8k across the 90 of their papers we have counts for
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Entropy from the foam
Remo Garattini
A simple model of spacetime foam, made by N wormholes in a semiclassical approximation, is taken under examination. We show that the Bekenstein-Hawking entropy is here ``quantized'…
Spacetime Foam and the Casimir Energy
Remo Garattini
We conjecture that the neutral black hole pair production is related to the vacuum fluctuation of pure gravity via the Casimir-like energy. A generalization of this process to a mu…
Vacuum Energy, Variational Methods and the Casimir Energy
Remo Garattini
Following the subtraction procedure for manifolds with boundaries, we calculate by variational methods, the Schwarzschild and Flat space energy difference. The one loop approximati…
Large N wormhole approach to spacetime foam
Remo Garattini
A simple model of spacetime foam, made by wormholes in a semiclassical approximation, is taken under examination. We show that the qualitative behaviour of the fluctuation of t…
Probing Vacuum with Variational Methods in Quantum Gravity
Remo Garattini
We use variational methods to calculate quasilocal energy quantum corrections. A comparison with the effective potential calculated at quadratic order is made by means of gaussian…
Energy Computation in Wormhole Background with the Wheeler-DeWitt Operators
Remo Garattini
We investigate the possibility of computing energy by means of operators associated to the Wheeler-DeWitt equation. By choosing three dimensional wormholes as a framework, we apply…