Search Results - "Tiwari, Rishi Kumar"

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  1. 1

    A Transition Model in f(R,T) Theory via Observational Constraints by Tiwari, Rishi Kumar, Shukla, Bhupendra Kumar, Sofuoğlu, Değer, Kösem, Dilay

    Published in Symmetry (Basel) (01-04-2023)
    “…A particular form of the time-dependent deceleration parameter is used to examine the accelerated expansion of the universe and the phase transition in this…”
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    Journal Article
  2. 2

    Anisotropic Cosmological Model in a Modified Theory of Gravitation by Tiwari, Rishi Kumar, Beesham, Aroonkumar, Mishra, Soma, Dubey, Vipin

    Published in Universe (Basel) (01-07-2021)
    “…Current observations indicate that, on a large enough scale, the universe is homogeneous and isotropic. However, this does not preclude the possibility of some…”
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  3. 3

    FLRW Cosmological Models with Dynamic Cosmological Term in Modified Gravity by Tiwari, Rishi Kumar, Beesham, Aroonkumar, Shukla, Bhupendra Kumar

    Published in Universe (Basel) (01-09-2021)
    “…Although the standard lambda cold dark matter cosmological model is quite successful in describing the universe, there are still several issues that are still…”
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  4. 4

    The Cosmology of a Non-Minimally Coupled f(R,T) Gravitation by Sofuoğlu, Değer, Tiwari, Rishi Kumar, Abebe, Amare, Alfedeel, Alnadhief H. A., Hassan, Eltegani I.

    Published in Physics (Online) (01-12-2022)
    “…A non-minimally coupled cosmological scenario is considered in the context of f(R,T)=f1(R)+f2(R)f3(T) gravity (with R being the Ricci scalar and T the trace of…”
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    Journal Article
  5. 5

    Impact of oral health preventive program using specialized audio and tactile aids in visually impaired school children. A cross-sectional study by Dwivedi, Rahul, Gupta, Pooja, Jana, Soumyakanti, Tiwari, Rishi Kumar, Verma, Reetika, Singh, Nitin, Gupta, Preeti

    Published in Journal of education and health promotion (01-04-2024)
    “…BACKGROUND: The maintenance of oral hygiene and subsequent health related issues in visually handicapped children is a challenging task. Hence, tools must be…”
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  6. 6

    Perturbations in Bianchi-V Spacetimes with Varying Λ, G and Viscous Fluids by Abebe, Amare, Alfedeel, Alnadhief H. A., Sofuoğlu, Değer, Hassan, Eltegani I., Tiwari, Rishi Kumar

    Published in Universe (Basel) (01-01-2023)
    “…As a follow-up of a recent article in which we investigated the cosmological background expansion history of the universe in Bianchi type-V cosmological models…”
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    Journal Article
  7. 7

    Hyperbolic Scenario of Accelerating Universe in Modified Gravity by Khan, Raja Azhar Ashraaf, Tiwari, Rishi Kumar, Bharali, Jumi, Bouali, Amine, Yildiz, G. Dilara Açan, Güdekli, Ertan

    Published in Symmetry (Basel) (01-06-2023)
    “…Throughout this study, locally rotationally symmetric (LRS) Bianchi type-V space-time is pondered with Tsallis holographic dark energy (THDE) with the…”
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  8. 8

    A cosmological model with time dependent Λ, G and viscous fluid in general relativity by Tiwari, Rishi Kumar, Alfedeel, Alnadhief H. A., Sofuoğlu, Değer, Abebe, Amare, Hassan, Eltegani I., Shukla, B. K.

    Published in Frontiers in astronomy and space sciences (05-08-2022)
    “…In this paper, we investigate Bianchi type − V cosmological models with bulk viscous fluid and time varying cosmological Λ and Newtonian G parameters. The…”
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  9. 9

    Decelerating to accelerating FRW universe with variable G and Λ in conharmonically flat space by Goyal, Manish, Tiwari, Rishi Kumar, Pradhan, Anirudh

    Published in New astronomy (01-01-2019)
    “…•We have presented a new class of models of accelerating universe with gravitational coupling G(t) and cosmological term Λ(t) in the framework of general…”
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  10. 10

    Accelerating universe with varying Λ in f(R, T) theory of gravity by Tiwari, Rishi Kumar, Sofuoğlu, Değer, Mishra, Sateesh Kumar

    Published in New astronomy (01-02-2021)
    “…•The model has point type singularity at t = 0.•The Hubble constant is estimated 0.069 GYrs-1.•The cosmological model of the evolving universe transit from…”
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  12. 12

    A Transition Model in If/I Theory via Observational Constraints by Tiwari, Rishi Kumar, Shukla, Bhupendra Kumar, Sofuoğlu, Değer, Kösem, Dilay

    Published in Symmetry (Basel) (01-03-2023)
    “…A particular form of the time-dependent deceleration parameter is used to examine the accelerated expansion of the universe and the phase transition in this…”
    Get full text
    Journal Article
  13. 13

    Bianchi Type-I Universe in Modified Theory of Gravity by Bhupendra Kumar Shukla, Rishi Kumar Tiwari, Aroonkumar Beesham

    Published in Physical sciences forum (01-02-2023)
    “…In this paper, we have studied an anisotropic Bianchi-I cosmological model in f(R,T) gravity. To obtain the exact solutions of the field equations, we have…”
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  14. 14

    Transit cosmological models with domain walls in f(R, T) gravity by Tiwari, Rishi Kumar, Beesham, A., Pradhan, Anirudh

    Published in Gravitation & cosmology (01-10-2017)
    “…We study the physical behavior of the transition of a 5D perfect fluid universe from an early decelerating phase to the current accelerating phase in the…”
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  15. 15

    Noncommutative geometry inspired 3-dimensional charged black hole solution in an anti-de Sitter background spacetime by Rahaman, Farook, Bhar, Piyali, Sharma, Ranjan, Tiwari, Rishi Kumar

    “…We report a 3 -D charged black hole solution in an anti-de Sitter space inspired by noncommutative geometry. In this construction, the black hole exhibits two…”
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    Journal Article
  16. 16

    Perturbations in Bianchi-V Spacetimes with Varying Λ, IG/I and Viscous Fluids by Abebe, Amare, Alfedeel, Alnadhief H. A, Sofuoglu, Deger, Hassan, Eltegani I, Tiwari, Rishi Kumar

    Published in Universe (Basel) (01-01-2023)
    “…As a follow-up of a recent article in which we investigated the cosmological background expansion history of the universe in Bianchi type-V cosmological models…”
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    Journal Article
  17. 17

    LRS Bianchi type-I cosmological models with accelerated expansion in f(R, T) gravity in the presence of Λ(T) by Pradhan, Anirudh, Tiwari, Rishi Kumar, Beesham, A., Zia, Rashid

    Published in European physical journal plus (01-05-2019)
    “… This paper examines the physical behaviour of the transition of the LRS Bianchi type-I perfect-fluid cosmological models from early decelerating to the…”
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    Journal Article
  18. 18

    A novel approach to Bianchi type-I cosmological model in f(R, T) gravity by Alfedeel, Alnadhief H. A., Tiwari, Rishi Kumar

    Published in Indian journal of physics (01-05-2022)
    “…In this paper, we have investigated the exact solutions of a perfect fluid Bianchi type - I cosmological model in the context of f ( R , T ) = R + λ T gravity,…”
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  19. 19

    Noncommutative geometry inspired [Formula omitted]-dimensional charged black hole solution in an anti-de Sitter background spacetime by Rahaman, Farook, Bhar, Piyali, Sharma, Ranjan, Tiwari, Rishi Kumar

    “…We report a -D charged black hole solution in an anti-de Sitter space inspired by noncommutative geometry. In this construction, the black hole exhibits two…”
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    Journal Article
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