The Fermat Principle in General Relativity and Applications

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dc.creatorGiannoni, Fabio
dc.creatorMasiello, Antonio
dc.creatorPiccione, Paolo
dc.date1999-06-25
dc.date.accessioned2026-07-25T22:35:18Z
dc.descriptionIn this paper we use a general version of Fermat's principle for light rays in General Relativity and a curve shortening method to write the Morse relations for light rays joining an event with a smooth timelike curve in a Lorentzian manifold with boundary. As a physical meaning, one can apply the Morse relations to have a mathematical description of the "gravitational lens effect" in a very general context.
dc.descriptionPlain TeX, 42 pages
dc.identifierhttps://arxiv.org/abs/math-ph/9906023
dc.identifierhttp://arxiv.org/abs/math-ph/9906023
dc.identifier.urihttps://dspace.dare.co.zw/handle/123456789/90530
dc.subjectMathematical Physics
dc.titleThe Fermat Principle in General Relativity and Applications
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