6533b7d6fe1ef96bd1266875
RESEARCH PRODUCT
Vacuum polarization around stars: Nonlocal approximation
Francisco D. MazzitelliAlejandro SatzEzequiel Alvarezsubject
PhysicsNuclear and High Energy PhysicsQED vacuumQuantum field theory in curved spacetimeVacuum stateFOS: Physical sciencesGeneral Relativity and Quantum Cosmology (gr-qc)General Relativity and Quantum CosmologySymmetry (physics)General Relativity and Quantum CosmologyStarsQuantum mechanicsQuantum electrodynamicsQuantum gravityVacuum polarizationCircular symmetrydescription
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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2004-11-09 | Physical Review D |