Statistical Entropy of an Acoustic Black Hole in Bose–Einstein Condensates

被引：0

作者：

马孟森

赵惠华

赵仁

机构：

[1] Institute of Theoretical Physics, Shanxi Datong University

[2] Department of Physics, Shanxi Datong University

来源：

CommunicationsinTheoreticalPhysics | 2013年 / 60卷 / 12期

关键词：

acoustic black holes; entanglement entropy; Bose–Einstein condensates;

D O I：

暂无

中图分类号：

P145.8 [塌缩星（黑洞）];

学科分类号：

070401 ;

摘要：

The entanglement entropy of an acoustic black hole in a Bose–Einstein condensates(BEC) is derived, which is associated with the phonons generated via the Hawking mechanism in a sonic hole. Considering the dispersion relation of a BEC, we recalculate the entanglement entropy of the acoustic black hole by means of statistical method in two limits. We find that the entropy is still proportional to the area of event horizon, but with a coefcient dependent on the infrared cutof.

引用

页码：695 / 698

页数：4

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