GENERAL: Inhomogeneous Vacuum: An Alternative Interpretation of Curved Spacetime

Details GENERAL: Inhomogeneous Vacuum: An Alternative Interpretation of Curved Spacetime GENERAL: Inhomogeneous Vacuum: An Alternative Interpretation of Curved Spacetime

May 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008chphl..25.1571y&link_type=abstract

Chinese Physics Letters, Volume 25, Issue 5, pp. 1571-1574 (2008).

Physics

Scientific paper

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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