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4 papers · 2 filters
Characterization of generalized quasi-Einstein manifolds and modified gravity
Uday Chand De, Hülya Bağdatli Yilmaz
In this work, a detailed examination of a specific case of a generalized quasi-Einstein manifold (GQE)n is provided. It begins by exploring generalized quasi-Einstein spacetimes un…
From Geometry to Observation: Gravitational Waves and the Raychaudhuri Equation
Sougata Bhunia, Anubhab Dutta, Debashis Gangopadhyay +1
Gravitational waves (GWs) are independent of any particular theory of gravity. The universality of this notion is highlighted by the Raychaudhuri equation (RE), which is independen…
Vulnerability of f(Q) gravity theory and a possible resolution
Dalia Saha, Abhik Kumar Sanyal
Both the generalized teleparallel theories of gravity suffer from some serious problems. The strong coupling issue appearing as a consequence of extra degrees of freedom in the `ge…
Non-Affine Extensions of the Raychaudhuri Equation in the K-essence Framework
Samit Ganguly, Goutam Manna, Debashis Gangopadhyay +2
We present a new avenue of the Raychaudhuri Equation (RE) by introducing a non-affine parametrization within the k-essence framework. This modification accounts for non-geodesic fl…