A SPACETIME FOAM APPROACH TO THE COSMOLOGICAL CONSTANT AND ENTROPY

2000/03/31 by Remo Garattini
Physics and Astronomy · #Casimir effect #Classical mechanics #Cosmological constant #Cosmology and Gravitation Theories #Entropy (arrow of time) #Mathematical physics #Noncommutative and Quantum Gravity Theories #Physics #Quantum #Quantum Electrodynamics and Casimir Effect #Quantum field theory in curved spacetime #Quantum gravity #Quantum mechanics #Semiclassical physics #Spacetime #Theoretical physics #Wormhole #gr-qc #hep-th

paper · pdf · doi:10.1142/s0218271802001445

published as Int.J.Mod.Phys.D4:635,2002 · Uses RevTeX, 24 pages, Appendix deleted and some corrections inserted. Final results unchanged

openalex publication_date 2002/04/01 · arxiv created 2002/06/04 · arxiv updated 2014/11/17 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

A simple model of spacetime foam, made by N wormholes in a semiclassical approximation, is taken under examination. The Casimir-like energy of the quantum fluctuation of such a model and its probability of being realized are computed. Implications on the Bekenstein–Hawking entropy and the cosmological constant are considered.

Citations

• On the proof of the positive mass conjecture in general relativity
• On the nature of quantum geometrodynamics
• Action and Hamiltonian for eternal black holes
• The origin of black hole entropy
• Black Hole Entropy from Loop Quantum Gravity
• Black Holes and Entropy
• Probability for primordial black holes
• Quantum Black Holes
• On Some Static Solutions of Einstein's Gravitational Field Equations in a Spherically Symmetric Case