Fermat's principle in general relativity via Herglotz variational formalism

New form of Fermat's principle for light propagation in arbitrary (i.e. in general neither static nor stationary) gravitational field is proposed. It is based on Herglotz extension of canonical formalism and simple relation between the dynamics described by the Lagrangians homogeneous in veloci...

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Bibliographic Details
Main Authors: Joanna Piwnik, Joanna Gonera, Piotr Kosiński
Format: Article
Language:English
Published: Elsevier 2025-01-01
Series:Nuclear Physics B
Online Access:http://www.sciencedirect.com/science/article/pii/S0550321324003109
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