Vacuum polarization around stars: Nonlocal approximation

Journal Article · Tue Mar 15 04:00:00 EST 2005 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PhysRevD.71.064001· OSTI ID:20706205

Satz, Alejandro ^[1]; Mazzitelli, Francisco D ^[2]; Alvarez, Ezequiel ^[3]

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1. School of Mathematical Sciences, University of Nottingham, NG7 2RD Nottingham (United Kingdom)
2. Departamento de Fisica Juan Jose Giambiagi, FCEyN UBA, Facultad de Ciencias Exactas y Naturales, Ciudad Universitaria, Pabellon I, 1428 Buenos Aires (Argentina)
3. Departament de Fisica Teorica, IFIC, CSIC, Universitat de Valencia, Dr Moliner 50, E-46100 Burjassot, Valencia Spain (Spain)

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 static 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.

• OSTI ID: 20706205
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 6 Vol. 71; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CORRECTIONS
QUANTUM ELECTRODYNAMICS
QUANTUM GRAVITY
SPACE-TIME
SPHERICAL CONFIGURATION
STARS
SYMMETRY
VACUUM POLARIZATION