On quantum effects in the vicinity of would-be horizons

Details On quantum effects in the vicinity of would-be horizons On quantum effects in the vicinity of would-be horizons

2006-12-28

arxiv.org/abs/gr-qc/0612178v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

Contribution to the Proceedings of the MG11

Scientific paper

We present a method based on the so-called Quantum Energy Inequalities, which allows to compare, and bound, the expectation values of energy-densities of ground states of quantum fields in spacetimes possessing isometric regions. The method supports the conclusion, that the Boulware energy density is universal both: at modest (and far) distances from compact spherical objects, and close to the would-be horizons of the gravastar/QBHO spacetimes. It also provides a natural consistency check for concrete (approximate, numerical) calculations of the expectation values of the energy-momentum tensors.

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