Test of gravitational red shift usingtwo atomic hydrogen clocks

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Important Dates

Conference:

Apr. 22-24, 2019

Full Paper Due: Mar. 18, 2019

Abstract Due: Mar. 18, 2019

Audience Registration Due:
Apr. 22, 2019

Presentations of The Spring World Congress on Engineering and Technology (SCET 2017)

● Test of gravitational red shift usingtwo atomic hydrogen clocks
Author(s)
Chenghui Cai
Affiliation(s)
Wuhan University
KEYWORDS
gravitational red shift, two atomic hydrogen clocks
ABSTRACT
General relativity (GR) states that a precise (atomic) clock runs quicker at a position with higher gravitational potential (GP) than a clock at a position with lower potential. Hence, one may determine the GP by comparing the time elapse using precise clocks, referred to as relativistic time comparison (RTC )approach. With quick development of time-frequency science, the RTCcould have potential applications in geodesy. However, until now, there are not sufficient experiments in comparing two clocks’ running rates. In this study we present direct comparison results using two hydrogen clocks with their stability around 10E-15, with one fixed and one portable. Results coincide with the GR conclusion about the clock’s running ratewithin the clocks’ accuracy range. This study is supported by National 973 Project China (grant No.2013CB733301 and 2013CB733305) and NSFCs