Geodesic structure of generalized Vaidya spacetime through the K-essence

Abstract

This article investigates on the radial and non-radial geodesic structures of the generalized K-essence Vaidya spacetime. Within the framework of K-essence geometry, it is important to note that the metric does not possess conformal equivalence to the conventional gravitational metric. This study employs a non-canonical action of the Dirac-Born-Infeld kind. In this work, we categorize the generalized K-essence Vaidya mass function into two distinct forms. Both the forms of the mass functions have been extensively utilized to analyze the radial and non-radial time-like or null geodesics in great details inside the comoving plane. Indications of the existence of wormhole can be noted during the extreme phases of spacetime, particularly in relation to black holes and white holes, which resemble the Einstein-Rosen bridge. In addition, we have also detected the distinctive indication of the quantum tunneling phenomenon around the central singularity.

arXiv comment19 pages, 21 figures

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• Joint Analysis of Constraints on f(R) Parametrization from Recent Cosmological Observations
• Collapsing scenarios of K-essence generalized Vaidya spacetime under $f(\bar{R},\bar{T})$ gravity
• Form Invariance of Raychaudhuri equation in the presence of Inflaton-type fields
• NEC violation in $f(\bar{R},\bar{T})$ gravity in the context of a non-canonical theory via modified Raychaudhuri equation
• Null geodesic structure for the Barriola-Vilenkin spacetime via $k$-essence
• Thermodynamics of a Non-canonical $f(\bar{R},\bar{T})$ gravity