Black and white holes at material junctions

Electrons in type II Weyl semimetals display one-way propagation, which supports totally reflecting behavior at an endpoint, as one has for black hole horizons viewed from the inside. Junctions of type I and type II lead to equations identical to what one has near black hole horizons, but the physic...

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Bibliographic Details
Published in:Physical review research 2020-11, Vol.2 (4), p.043285, Article 043285
Main Authors: Kedem, Yaron, Bergholtz, Emil J., Wilczek, Frank
Format: Article
Language:English
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Summary:Electrons in type II Weyl semimetals display one-way propagation, which supports totally reflecting behavior at an endpoint, as one has for black hole horizons viewed from the inside. Junctions of type I and type II lead to equations identical to what one has near black hole horizons, but the physical implications, we suggest, are quite different from expectations which are conventional in that context. The time-reversed, “white hole” configuration is also physically accessible.
ISSN:2643-1564
2643-1564
DOI:10.1103/PhysRevResearch.2.043285