Zobrazeno 1 - 10
of 266
pro vyhledávání: '"Ujjal Debnath"'
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 84, Iss 9, Pp 1-19 (2024)
Abstract In this paper, we investigate the phenomenon of the accelerated cosmic expansion in the late universe and the mass accretion process for a four-dimensional Einstein-Aether black hole. Starting with the basics of Einstein-Aether gravity theor
Externí odkaz:
https://doaj.org/article/6d64e810c1b44632b6e3f0943477d8b8
Autor:
Niyaz Uddin Molla, Himanshu Chaudhary, G. Mustafa, Farruh Atamurotov, Ujjal Debnath, Dhruv Arora
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 84, Iss 6, Pp 1-20 (2024)
Abstract We investigate the strong gravitational lensing phenomena caused by a black hole with a dark matter halo in the presence of cloud string and quintessence. This study examines strong gravitational lensing with two significant dark matter mode
Externí odkaz:
https://doaj.org/article/9acf2a16bb604ec8a524fde385190ec1
Autor:
Krishna Pada Das, Ujjal Debnath
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 84, Iss 5, Pp 1-16 (2024)
Abstract In this work, we have investigated a new solution for charged anisotropic compact stellar system in the framework of an extended theory of symmetric teleparallel gravity known as f(Q, T) gravity with the non-metricity term Q and the trace T
Externí odkaz:
https://doaj.org/article/f57d6eb514154cee89edb2755b8c7f46
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 84, Iss 4, Pp 1-16 (2024)
Abstract We investigate strong gravitational lensing by quantum-improved charged black holes characterized by an additional parameter denoted as $$\omega $$ ω , in addition to the mass M and charge Q. Our findings reveal that when both the parameter
Externí odkaz:
https://doaj.org/article/faf51cc2165140d4a4d0a24dba8415f9
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 84, Iss 3, Pp 1-22 (2024)
Abstract In this work, we assume that the FLRW universe, which is filled with dark matter along with dark energy, is in the framework of Hořava–Lifshitz (HL) gravity. The dark energy is considered as the linear (Model I) and CPL (Model II) paramet
Externí odkaz:
https://doaj.org/article/1bc278158a474bffa23caf0ffe051fbd
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 84, Iss 2, Pp 1-9 (2024)
Abstract Thermodynamics of non-flat Amended Friedmann–Robertson–Walker (AFRW) universe with cosmological constant as thermodynamic pressure is studied. The unified first law of thermodynamics, the Clausius relation and the gravity equations yield
Externí odkaz:
https://doaj.org/article/891831b7526e4efdac991a31bb95f5db
Autor:
Dhruv Arora, Niyaz Uddin Molla, Himanshu Chaudhary, Ujjal Debnath, Farruh Atamurotov, G. Mustafa
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 83, Iss 11, Pp 1-12 (2023)
Abstract The current manuscript deals with the tidal force effects, geodesic deviation, and shadow constraints of the Schwarzschild-like black hole theorised in Starobinsky–Bel-Robinson gravity exhibiting M-theory compactification. In the current a
Externí odkaz:
https://doaj.org/article/476224353b24465a915b5489e14ff57f
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 83, Iss 10, Pp 1-18 (2023)
Abstract The paper is devoted to study the observational signatures of $$f(R,G,\mathcal {T})$$ f ( R , G , T ) gravity in FRW universe. In this research article, we present a new cosmological model formulated within the $$f(R,G,\mathcal {T})$$ f ( R
Externí odkaz:
https://doaj.org/article/f81079088a794d598e962dec53417907
Autor:
Krishna Pada Das, Ujjal Debnath
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 83, Iss 9, Pp 1-25 (2023)
Abstract In the present article, we have explored the possible existence of a traversable wormhole in the framework of Finsler–Randers (F–R) geometry. In order to achieve this goal, first, we have constructed gravitational field equations for sta
Externí odkaz:
https://doaj.org/article/cc8f51f22819421f9d0d2af0fb23b17a
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 83, Iss 6, Pp 1-16 (2023)
Abstract In a non-flat FRW model, we have considered our Universe to be filled with non-interacting dark energy and dark matter. For the dark energy models, we have assumed Tachyonic Field (TF), Generalized Cosmic Chaplygin Gas (GCCG), New Variable M
Externí odkaz:
https://doaj.org/article/28f139751ed14c2292a8ee365219f263