Article
Astronomy & Astrophysics
Shamaila Rani, Nadeem Azhar
Summary: This study investigates the evolution of cosmic parameters and planes within the framework of the DGP braneworld model, revealing the range of Hubble parameter, the supported cosmic evolution modes by the equation of state parameter, as well as the stability and thermodynamic properties of the underlying model.
Article
Astronomy & Astrophysics
Arindam Saha, Anirban Chanda, Sagar Dey, Souvik Ghose, B. C. Paul
Summary: We investigate both the interacting and non-interacting Renyi Holographic Dark Energy (RHDE) models in the Dvali-Gabadadze-Porrati (DGP) braneworld framework. The cosmological parameters and their evolutions are probed to obtain realistic cosmological models. We note that both models can accommodate the present accelerating phase of expansion with the observed dark energy density. Classical stability of the cosmological model and the Om-diagnostic are also studied to test the suitability of the cosmological models obtained in the presence of RHDE in the DGP braneworld.
MODERN PHYSICS LETTERS A
(2023)
Article
Astronomy & Astrophysics
Chenchen Zhao, Yannan Qi, Weiqiang Yang, Bo Jiang, Wenyu Feng, Yabo Wu
Summary: This paper further studies the cosmological evolution and geometry diagnosis of the Barrow holographic dark energy in the DGP braneworld by exploring the interaction between dark energy and dark matter. The results show that the model conforms to the current cosmic evolution rule and provides an explanation for cosmic acceleration. Additionally, geometric diagnosis methods such as the Statefinder hierarchy and Om(z) can distinguish this model from the CDM model and reveal the coupling parameters that significantly affect the dark energy model.
MODERN PHYSICS LETTERS A
(2022)
Article
Astronomy & Astrophysics
Shin'ichi Nojiri, Sergei D. Odintsov, Tanmoy Paul
Summary: In this study, the holographic cut-off in the formalism of generalized holographic dark energy (HDE) is generalized to depend on the particle horizon, future horizon, and scale factor of the universe. It is shown that the Barrow entropic dark energy (DE) model is equivalent to the generalized HDE, where the holographic cut-off is determined by the first-order derivative of the particle horizon or future horizon. The equivalence is extended to consider the variation of the Barrow entropy exponent with the cosmological expansion.
Article
Multidisciplinary Sciences
Shin'ichi Nojiri, Sergei D. Odintsov, Tanmoy Paul
Summary: In this study, the formalism of generalized holographic dark energy was extended to various dark energy models, revealing their equivalence with the generalized HDE. This confirms a symmetry between different DE models and the generalized HDE, further demonstrating the interplay between these concepts in cosmology.
Article
Astronomy & Astrophysics
Abdul Jawad, Manzar Abbas, Shamaila Rani
Summary: This paper investigates holographic inflation within the frameworks of f(T) gravity and DGP braneworld model, exploring various inflationary parameters using a modified infrared cutoff. The behavior of these parameters is presented graphically and shown to be consistent with Planck 2018 data.
INTERNATIONAL JOURNAL OF MODERN PHYSICS D
(2021)
Article
Astronomy & Astrophysics
Ryong Gwang Kim, Chang Hyok Ri
Summary: This study examines a generalized interacting holographic dark energy model with a parameterized coupling constant in a spatially flat universe filled with holographic dark energy and dark matter. The research findings indicate a transition from a deceleration phase to an accelerated phase for the universe under different parameterizations, and a present coincidence parameter value of -0.37 in this model with a suitable choice of the coupling parameter.
Article
Physics, Nuclear
Haryanto M. M. Siahaan
Summary: We study a charged Taub-NUT spacetime solution in the Dvali-Gabadadze-Porrati (DGP) brane and show that it satisfies the corresponding equations of motion in Einstein-Maxwell gravity, where the cosmological constant is connected to the cross-over scale in the DGP model. By following the approach by Teitelboim for discussing the thermodynamics of de Sitter spacetime and the proposal by Wu et al. for a conserved charge associated with the NUT parameter, we obtain the generalized Smarr mass formula and the first law of thermodynamics of the spacetime.
Article
Physics, Multidisciplinary
Ahmad Sheykhi, Maral Sahebi Hamedan
Summary: The thermodynamics-gravity conjecture suggests a strong connection between the gravitational field equations and the first law of thermodynamics, meaning any changes in entropy expression directly impact the field equations. By considering the modified Barrow entropy associated with the apparent horizon, the Friedmann equations are altered as well. This paper explores the implications of this modification on the holographic dark energy (HDE) model, highlighting changes in energy density and the Friedmann equations. The study also investigates the cosmological consequences of using the Hubble horizon and future event horizon as infrared cutoffs, including interactions between dark matter (DM) and dark energy (DE), and the impact of the Barrow exponent on the cosmological behavior of HDE, such as crossing the phantom line and shifting the universe phase transition time.
Article
Astronomy & Astrophysics
Ryong Gwang Kim, Jik Su Kim, Kwang Hyon Kim, Chang Hyok Ri, Yeon Ung Jang
Summary: This study establishes a model of holographic dark energy interacting with dark matter in a flat universe and validates it with observational data, addressing the coincidence problem by obtaining the deceleration parameter and coincidence parameter.
ASTROPHYSICS AND SPACE SCIENCE
(2021)
Article
Astronomy & Astrophysics
Shin'ichi Nojiri, Sergei D. Odintsov, Valerio Faraoni
Summary: We propose a new entropy construct that generalizes existing entropies and converges to known entropy in a specific limit. Applying this construct to Schwarzschild black hole and cosmology models, it is shown that it has the potential to describe inflation and/or holographic dark energy.
Article
Astronomy & Astrophysics
Suvankar Dutta, Taniya Mandal, Sanhita Parihar
Summary: The paper investigates the relativistic origin of the Rivlin-Ericksen fluid and finds it to be a subclass of a generalized nonrelativistic system. The study also reveals that three of the nonrelativistic second-order transports satisfy a universal constraint relation.
Article
Multidisciplinary Sciences
Gargee Chakraborty, Surajit Chattopadhyay, Ertan Gudekli, Irina Radinschi
Summary: This study investigates the cosmological consequences and thermodynamics of Barrow holographic dark energy (HDE), incorporating viscosity and reconstructions of parameters associated with Barrow HDE. Observations of quintessence and quintom behavior, as well as the validity of the generalized second law of thermodynamics, are reported. The study demonstrates the physical viability of considering Barrow HDE as a specific case of NO HDE but concludes that the model is limited to being very close to ΛCDM and cannot go beyond it.
Article
Astronomy & Astrophysics
Zahra Feizi Mangoudehi
Summary: The purpose of this paper is to study the Tsallis agegraphic dark energy with an interaction term between dark energy and dark matter in the DGP brane-world scenario. The analysis shows that the model exhibits a phase transition from deceleration to acceleration. The graphs of omega(DE) show phantom behavior, while omega(tot) exhibits both quintessence and phantom during the evolution of the Universe. The Statefinder analysis reveals quintessence behavior in the past and present, but tends towards the Lambda CDM in the future.
ASTROPHYSICS AND SPACE SCIENCE
(2022)
Article
Physics, Multidisciplinary
R. G. Kim, J. S. Kim
Summary: In this study, an interacting holographic dark energy model was examined using recent observations, with the possibility of non-zero coupling parameter values and dark energy state equation parameters less than -1. The model effectively explains the transition from deceleration to acceleration in the universe, potentially resolving the cosmic coincidence problem.
INDIAN JOURNAL OF PHYSICS
(2022)
Article
Physics, Mathematical
Binod Chetry, Jibitesh Dutta, Ujjal Debnath, Wompherdeiki Khyllep
INTERNATIONAL JOURNAL OF GEOMETRIC METHODS IN MODERN PHYSICS
(2019)
Article
Astronomy & Astrophysics
Binod Chetry, Jibitesh Dutta, Wompherdeiki Khyllep
INTERNATIONAL JOURNAL OF MODERN PHYSICS D
(2019)
Article
Physics, Multidisciplinary
Mumukshu Trivedi, Md. Sharifuddin Ansari
EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS
(2019)
Article
Physics, Particles & Fields
Andronikos Paliathanasis, Genly Leon, Wompherdeiki Khyllep, Jibitesh Dutta, Supriya Pan
Summary: The study focuses on the interaction between dark matter and dark energy, with modifications from quantum corrections introduced by the Generalized Uncertainty Principle. Analyzing specific models, new solutions not present in quintessence models are discovered. Moreover, investigation on cosmological linear perturbations reveals significant impact of quantum corrections on perturbations.
EUROPEAN PHYSICAL JOURNAL C
(2021)
Article
Physics, Particles & Fields
Wompherdeiki Khyllep, Jibitesh Dutta
Summary: Non-minimal coupled scalar field models have various cosmological applications, such as describing dark energy, dark matter, and cosmic inflation. By utilizing bifurcation theory, these models can predict the global dynamics without fine-tuning of initial conditions, providing a more accurate description of cosmic evolution.
EUROPEAN PHYSICAL JOURNAL C
(2021)
Article
Astronomy & Astrophysics
Wompherdeiki Khyllep, Jibitesh Dutta, Emmanuel N. Saridakis, Kuralay Yesmakhanova
Summary: Motivated by the success of f(Q) gravity in fitting observational data, we analyze the behavior of two studied f(Q) models, power-law and exponential, through dynamical system analysis. We find that both models have a matter-dominated saddle point followed by a stable dark-energy-dominated accelerated universe. The models fit observational data well and can be considered as promising alternatives to the ACDM concordance model.
Article
Astronomy & Astrophysics
Wompherdeiki Khyllep, Jibitesh Dutta, Spyros Basilakos, Emmanuel N. Saridakis
Summary: In this study, the formalism of dynamical system analysis is used to investigate the evolution of interacting dark energy scenarios at both the background and perturbation levels. The critical points of the background analysis split due to the introduction of an extra perturbation variable related to matter overdensity, indicating different behavior and stability properties of matter perturbations. Stable attractors corresponding to a dark energy-dominated accelerated solution with constant matter perturbations are found at late times, as required by observations. This reveals the capabilities of interacting cosmology in accurately describing both the matter and dark energy epochs at both the background and perturbation levels.
Article
Astronomy & Astrophysics
Wompherdeiki Khyllep, Andronikos Paliathanasis, Jibitesh Dutta
Summary: The study investigates one of Einstein's alternative formulations based on nonmetricity scalar Q generalized as f(Q) theory, focusing on the power-law form of f(Q) gravity. The analysis reveals that the geometric component of the theory determines the late-time acceleration of the Universe, and the model deviates from ΛCDM even for |n| < 1 at the perturbation level. The integrability of the model is examined using singularity analysis, finding conditions under which field equations pass the Painleve test and possess the Painleve property.
Article
Mathematics
O. Otegbeye, Md S. Ansari, T. P. Singh, M. Trivedi, S. P. Goqo
ADVANCES AND APPLICATIONS IN MATHEMATICAL SCIENCES
(2020)
Proceedings Paper
Mathematics, Applied
Olumuyiwa Otegbeye, Sicelo P. Goqo, Md Sharifuddin Ansari
PROCEEDINGS OF THE SECOND INTERNATIONAL CONFERENCE ON FRONTIERS IN INDUSTRIAL AND APPLIED MATHEMATICS (FIAM-2019)
(2020)
Article
Engineering, Mechanical
Mumukshu H. Trivedi, Md S. Ansari
SPECIAL TOPICS & REVIEWS IN POROUS MEDIA-AN INTERNATIONAL JOURNAL
(2020)
Article
Thermodynamics
Md Sharifuddin Ansari, Vusi Mpendulo Magagula, Mumukshu Trivedi
Article
Thermodynamics
Md S. Ansari, S. S. Motsa, M. Trivedi
COMPUTATIONAL THERMAL SCIENCES
(2019)
Article
Nanoscience & Nanotechnology
Md. S. Ansari, S. S. Motsa, M. Trivedi
JOURNAL OF NANOFLUIDS
(2019)
Article
Thermodynamics
Olumuyiwa Otegbeye, Dile S. Motsa, Md Sharifuddin Ansari
HEAT TRANSFER-ASIAN RESEARCH
(2019)
