ACOUSTIC BLACK HOLES FROM SUPERCURRENT TUNNELING
XIAN-HUI GEDepartment of Physics, Shanghai University, Shanghai 200444, ChinaSHAO-FENG WUDepartment of Physics, Shanghai University, Shanghai 200444, ChinaYUNPING WANGInstitute of Physics, Chinese Academy of Sciences, Beijing 100190, ChinaGUO-HONG YANGDepartment of Physics, Shanghai University, Shanghai 200444, ChinaYOU-GEN SHENShanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030, China
2012en
ABI
Abstract
We present a version of acoustic black holes by using the principle of the Josephson effect. We find that in the case where two superconductors A and B are separated by an insulating barrier, an acoustic black hole may be created in the middle region between the two superconductors. We discuss in detail how to describe an acoustic black hole in the Josephson junction and write the metric in the language of the superconducting electronics. Our final results infer that for big enough tunneling current and thickness of the junction, experimental verification of the Hawking temperature could be possible.
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Cited by 20 references