Dirac's large number hypothesis is motivated by certain scaling transformations that relate the parameters of macro and microphysics. We show that these relations can actually be explained in terms of the holographic N bound conjectured by Bousso and a series of purely cosmological observations, namely, that our universe is spatially homogeneous, isotropic, and flat to a high degree of approximation and that the cosmological constant dominates the energy density at present.
Physical Review D
- Pub Date:
- April 2002
- Fundamental problems and general formalism;
- Quantum aspects of black holes evaporation thermodynamics;
- General Relativity and Quantum Cosmology;
- 4 pages, version accepted for publication in Phys. Rev. D