Geometry of Twisted Products and Applications on Static Perfect Fluid Spacetimes

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International Electronic Journal of Geometry
Volume:16 Issue:2
Geometry of Twisted Products and Applications on Static Perfect Fluid Spacetimes

Geometry of Twisted Products and Applications on Static Perfect Fluid Spacetimes

Authors : Sinem Güler, U C De, Bülent Ünal

Pages : 598-607

Doi:10.36890/iejg.1286525

View : 131 | Download : 208

Publication Date : 2023-10-29

Article Type : Research Paper

Abstract :In this paper, first we study the harmonicity of the functions and forms on the twisted products, and then we determine its sectional curvature. We explore some characteristics of static perfect fluid and static vacuum spacetimes on twisted product manifolds by proving the existence and obstructions on Ricci curvature. Finally, we study the problem of the existence static perfect fluid spacetime associated with the twisted generalized Robertson-Walker and standard static spacetime metrics.
Keywords : Twisted product, gradient Ricci soliton, static perfect fluid, vacuum static space, generalized Robertson Walker spacetime, standard static spacetime metric

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