Cosmological constant, semiclassical gravity, and foundations of quantum mechanics

Details Cosmological constant, semiclassical gravity, and foundations of quantum mechanics Cosmological constant, semiclassical gravity, and foundations of quantum mechanics

2006-11-06

arxiv.org/abs/gr-qc/0611037v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

8 pages

Scientific paper

The old cosmological-constant (CC) problem indicates an inconsistency of the usual formulation of semiclassical gravity. The usual formulation of semiclassical gravity also seems to be inconsistent with the conventional interpretation of quantum mechanics based on the discontinuous wave-function collapse. By reformulating semiclassical gravity in terms of Bohmian deterministic particle trajectories, the resulting semiclassical theory avoids both the old CC problem and the discontinuous collapse problem of the usual semiclassical theory. The relevance to the new CC problem and to particle creation by classical gravitational fields is also discussed.

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