Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2004-11-09
Phys.Rev.D71:064001,2005
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
8 pages, no figures
Scientific paper
10.1103/PhysRevD.71.064001
We compute the vacuum polarization associated with quantum massless fields around stars with spherical symmetry. The nonlocal contribution to the vacuum polarization is dominant in the weak field limit, and induces quantum corrections to the exterior metric that depend on the inner structure of the star. It also violates the null energy conditions. We argue that similar results also hold in the low energy limit of quantum gravity. Previous calculations of the vacuum polarization in spherically symmetric spacetimes, based on local approximations, are not adequate for newtonian stars.
Alvarez Ezequiel
Mazzitelli Francisco D.
Satz Alejandro
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