Possible quantum gravity effects in a charged Bose condensate under variable e.m. field

Details Possible quantum gravity effects in a charged Bose condensate under variable e.m. field Possible quantum gravity effects in a charged Bose condensate under variable e.m. field

1996-12-09

arxiv.org/abs/gr-qc/9612022v3

Phys.Essays 14 (2001) 93-105

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

26 pages, PDF, 7 figures. Final journal version

Scientific paper

In the weak field approximation to quantum gravity, a "local" positive cosmological term mu^2(x) corresponds to a local negative squared mass term in the Lagrangian and may thus induce instability and local pinning of the gravitational field. Such a term can be produced by the coupling to an external Bose condensate. In the functional integral, the local pinning acts as a constraint on the field configurations. We discuss this model in detail and apply it to a phenomenological analysis of recent experimental results.

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