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Showing 1 to 2 of 2 for “"conformal vector field"”.
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PERFECT FLUIDS AND SIGMA MODELS: A MATHEMATICAL INVESTIGATION BETWEEN GENERAL RELATIVITY AND COTTON GRAVITY
… The latter are special solutions of the Einstein field equations on a static space-time with matter sources modelled by a perfect fluid and a map φ, while the former are the natural generalization of φ-SPFSTs in the framework of a gravitational theory of recent introduction, called Cotton Gravity. …
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ON SOME GEOMETRIC PROPERTIES OF 𝜑-STATIC SPACES
Lo scopo di questa tesi è l’analisi di proprietà geometriche di alcune strutture, che sono denotate con φ-static spaces, che consistono in una mappa fra varietà Riemanniane e una funzione detta potenziale sulla varietà di partenza, le quali soddisfano un sistema accoppiato di PDE. Tali spazi …