Dynamics of relativistic wormholes in the presence of dark matter density profile within f(Q,T) gravity
Kumar J. Maurya S.K. Kiroriwal S. Errehymy A. Myrzakulov K. Umbetova Z.
December 2024Elsevier B.V.
Physics of the Dark Universe
2024#46
In this paper, we study the characteristics of wormhole models in a particular gravity theory, namely f(Q,T)=σQ+λT. Here, we derived the wormhole models by using dark matter profiles that are Einasto spike and Pseudo isothermal that is ρES=ρ0exp[Formula presented][Formula presented]ζ−1 and ρPI=[Formula presented] respectively. The obtained solutions for the wormholes shape function satisfy the necessary metric requirements. This study focuses on how the parameters σ and λ affect the equilibrium state of the wormhole solution and violations of energy conditions. We found that every model deviates from the null energy threshold, suggesting the existence of exotic matter that is required for the wormholes to be stable. Furthermore, we deciphered the geometry of wormhole models using embedding diagrams. Additionally, we investigated the repulsive effect of gravity. When the geodesic motion around the wormholes is examined, it is discovered that the photon deflection angle is negative, suggesting the existence of gravitys repulsive effect for both models.
Dark matter , Deflection angle , Modified gravity , Wormhole geometry
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Department of Mathematics, Central University of Haryana, Jant-Pali, Haryana, Mahendergarh, 123029, India
Department of Mathematical and Physical Sciences, College of Arts and Sciences, University of Nizwa, Nizwa 616
Astrophysics Research Centre, School of Mathematics, Statistics and Computer Science, University of KwaZulu-Natal, Private Bag X54001, Durban, 4000, South Africa
Department of General and Theoretical Physics, L.N. Gumilyov Eurasian National University, Astana, 010008, Kazakhstan
Department of Mathematics
Department of Mathematical and Physical Sciences
Astrophysics Research Centre
Department of General and Theoretical Physics
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