Black hole Meissner effect and entanglement

Abstract

Extremal black holes tend to expel magnetic and electric fields. Fields are unable to reach the horizon because the length of the black hole throat blows up in the extremal limit. The length of the throat is related to the amount of entanglement between modes on either side of the horizon. So it is natural to try to relate the black hole Meissner effect to entanglement. We derive the black hole Meissner effect directly from the low temperature limit of two-point functions in the Hartle-Hawking vacuum. Then we discuss several new examples of the black hole Meissner effect, its applications to astrophysics, and its relationship to gauge invariance.

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• Magnetized Black Holes in an External Gravitational Field
• Separability of test fields equations on the C-metric background II. Rotating case and the Meissner effect
• A mathematical form of force-free magnetosphere equation around Kerr black holes and its application to Meissner effect
• Zooming in on the horizon when in its Meissner state
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