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Inhomogeneous Vacuum: An Alternative Interpretation of the Curved Space-time
Xing-Hao Ye * #,Qiang Lin
Department of Physics, Zhejiang University
*Correspondence author
#Submitted by
Subject:
Funding: the Ministry of Science and Technology of China,Zhejiang Provincial Qian-Jiang-Ren-Cai Project of China（No.2006CB921403 & 2006AA06A204,2006R10025）
Opened online:28 February 2008
Accepted by: none
Citation: Xing-Hao Ye,Qiang Lin.Inhomogeneous Vacuum: An Alternative Interpretation of the Curved Space-time[OL]. [28 February 2008] http://en.paper.edu.cn/en_releasepaper/content/18905
 
 
The strong similarities between the light propagation in a curved space-time and that in a medium with graded refractive index are found. It is pointed out that a curved space-time is equivalent to an inhomogeneous vacuum for light propagation. The corresponding graded refractive index of the vacuum in a static spherically symmetrical gravitational field is derived. This result provides a simple and convenient way to analyze the gravitational lensing in astrophysics.
Keywords:inhomogeneous vacuum, curved space-time, gravitational lensing
 
 
 

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