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Inhomogeneous Vacuum: An Alternative Interpretation of Curved Spacetime |
| YE Xing-Hao;LIN Qiang |
| Department of Physics, Zhejiang University, Hangzhou 310027 |
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| Cite this article: |
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YE Xing-Hao, LIN Qiang 2008 Chin. Phys. Lett. 25 1571-1574 |
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Abstract The strong similarities between the light propagation in a curved spacetime and that in a medium with graded refractive index are found. It is pointed out that a curved spacetime 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 analyse the gravitational lensing in astrophysics.
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04.62.+v
98.62.Sb
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Received: 14 January 2008
Published: 29 April 2008
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| PACS: |
04.62.+v
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(Quantum fields in curved spacetime)
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98.62.Sb
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(Gravitational lenses and luminous arcs)
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