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arXiv:2006.12828 · Physical Review Research

Acoustic analog of Hawking radiation in quantized circular superflows of Bose-Einstein condensates

Igor Yatsuta, Boris A. Malomed, Alexander Yakimenko

Published Oct 12, 2020• 7 citations
arXivHTMLPDF

Abstract

The paper reveals that emulation of the black-hole environment in a ring-shaped BEC with non-uniform local sound speed suppresses instabilities in the supersonic region, by a smooth gradient at the white-hole horizon. Further, no Hawking-radiation is generated if the ring's radius falls below a critical value
DOI
10.1103/physrevresearch.2.043065

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