Decoherence of macroscopic objects from relativistic effect

doi:10.1088/1674-1056/27/10/100301

中国物理B ›› 2018, Vol. 27 ›› Issue (10): 100301-100301.doi: 10.1088/1674-1056/27/10/100301

• SPECIAL TOPIC—Recent advances in thermoelectric materials and devices • 上一篇下一篇

Decoherence of macroscopic objects from relativistic effect

Guo-Hui Dong(董国慧), Yu-Han Ma(马宇翰), Jing-Fu Chen(陈劲夫), Xin Wang(王欣), Chang-Pu Sun(孙昌璞)

1 Beijing Computational Science Research Center, Beijing 100193, China;
2 Graduate School of China Academy of Engineering Physics, Beijing 100193, China

收稿日期:2018-06-07 修回日期:2018-08-13 出版日期:2018-10-05 发布日期:2018-10-05
通讯作者: Chang-Pu Sun E-mail:cpsun@csrc.ac.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11421063 and 11534002), the National Key Basic Research Program of China (Grant No. 2014CB921403), the National Key Research and Development Program of China (Grant No. 2016YFA0301201), and the NSAF (Grant No. U1530401).

Decoherence of macroscopic objects from relativistic effect

Guo-Hui Dong(董国慧)^1,2, Yu-Han Ma(马宇翰)^1,2, Jing-Fu Chen(陈劲夫)^1,2, Xin Wang(王欣)^1,2, Chang-Pu Sun(孙昌璞)^1,2

1 Beijing Computational Science Research Center, Beijing 100193, China;
2 Graduate School of China Academy of Engineering Physics, Beijing 100193, China

Received:2018-06-07 Revised:2018-08-13 Online:2018-10-05 Published:2018-10-05
Contact: Chang-Pu Sun E-mail:cpsun@csrc.ac.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11421063 and 11534002), the National Key Basic Research Program of China (Grant No. 2014CB921403), the National Key Research and Development Program of China (Grant No. 2016YFA0301201), and the NSAF (Grant No. U1530401).

摘要/Abstract

摘要：

We study how the decoherence of macroscopic objects originates intrinsically from the relativistic effect. With the degree of freedom of the center of mass (CM) characterizing the collective quantum state of a macroscopic object (MO), it is found that an MO consisting of N particles can decohere with a time scale of no more than √N^-1. Here, the special relativity can induce the coupling of the collective motion mode and the relative motion modes in an order of 1/c², which intrinsically results in the above minimum decoherence.

关键词: decoherence, macroscopic object, special relativistic effect

Abstract:

Key words: decoherence, macroscopic object, special relativistic effect

中图分类号: (Special relativity)

03.30.+p

03.65.Yz (Decoherence; open systems; quantum statistical methods) 04.20.Cv (Fundamental problems and general formalism)

董国慧, 马宇翰, 陈劲夫, 王欣, 孙昌璞. Decoherence of macroscopic objects from relativistic effect[J]. 中国物理B, 2018, 27(10): 100301-100301.

Guo-Hui Dong(董国慧), Yu-Han Ma(马宇翰), Jing-Fu Chen(陈劲夫), Xin Wang(王欣), Chang-Pu Sun(孙昌璞). Decoherence of macroscopic objects from relativistic effect[J]. Chin. Phys. B, 2018, 27(10): 100301-100301.

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Decoherence of macroscopic objects from relativistic effect

Decoherence of macroscopic objects from relativistic effect

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