Wormholes with tuned throat parameters can produce the same shadow and silhouette radii as Schwarzschild black holes but yield brighter accretion disk images dominated by Doppler boosting rather than gravitational redshift.
Semiclassical long throats of the wormholes
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abstract
The vacuum polarization of the quantized scalar field with non-conformal coupling $\xi$ on the long throat of a wormhole background is calculated. It is shown that the stress-energy tensor of vacuum fluctuations in considered spacetime is determined by the local geometry of spacetime only. The self-consistent solutions of the semiclassical Einstein field equations describing a long throat of a traversable wormhole are obtained.
fields
gr-qc 1years
2026 1verdicts
UNVERDICTED 1representative citing papers
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Image of a wormhole with an arbitrary throat profile
Wormholes with tuned throat parameters can produce the same shadow and silhouette radii as Schwarzschild black holes but yield brighter accretion disk images dominated by Doppler boosting rather than gravitational redshift.