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相关论文: Study of Some Parameters of Modified Chaplygin Gas…

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We have assumed FRW model of the universe in Einstein-Aether gravity filled with dark matter and Modified Chaplygin gas (MCG) type dark energy. We present the Hubble parameter in terms of some unknown parameters and observational parameters…

广义相对论与量子宇宙学 · 物理学 2013-10-09 Ujjal Debnath

We have considered the FRW universe in loop quantum cosmology (LQC) model filled with the dark matter (perfect fluid with negligible pressure) and the modified Chaplygin gas (MCG) type dark energy. We present the Hubble parameter in terms…

综合物理 · 物理学 2015-06-05 Shuvendu Chakraborty , Ujjal Debnath , Chayan Ranjit

Assuming the flat FRW universe in Einstein's gravity filled with New Variable Modified Chaplygin gas (NVMCG) dark energy and dark matter having negligible pressure. In this research work we analyze the viability on the basis of recent…

综合物理 · 物理学 2012-11-13 Jhumpa Bhadra , Ujjal Debnath

FRW universe in Horava-Lifshitz (HL) gravity model filled with a combination of dark matter and dark energy in the form of variable modified Chaplygin gas (VMCG) is considered. The permitted values of the VMCG parameters are determined by…

广义相对论与量子宇宙学 · 物理学 2015-09-09 Chayan Ranjit , Prabir Rudra

In this work, we have considered the flat FRW model of the universe in $(n+2)$-dimensions filled with the dark matter (perfect fluid with negligible pressure) and the modified Chaplygin gas (MCG) type dark energy. We present the Hubble…

综合物理 · 物理学 2015-09-09 Chayan Ranjit , Shuvendu Chakraborty , Ujjal Debnath

FRW universe in RS II braneworld model filled with a combination of dark matter and dark energy in the form of modified Chaplygin gas (MCG) is considered. It is known that the equation of state (EoS) for MCG is a three-variable equation…

综合物理 · 物理学 2015-06-15 Chayan Ranjit , Prabir Rudra , Sujata Kundu

We have assumed the FRW universe in loop quantum cosmology (LQC) model filled with the dark matter and the Generalized Cosmic Chaplygin gas (GCCG) type dark energy where dark matter follows the linear equation of state. We present the…

综合物理 · 物理学 2014-09-25 Chayan Ranjit , Ujjal Debnath

In this work, we explore the cosmological dynamics of a modified gravity framework based on the function $f(Q,B)=\delta Q^{2}+\beta B$, where $Q$ denotes the nonmetricity scalar and $B$ is the boundary term that relates $Q$ to the Ricci…

广义相对论与量子宇宙学 · 物理学 2025-07-22 Amit Samaddar , S. Surendra Singh

We have considered flat Friedmann-Robertson-Walker (FRW) model of the universe and reviewed the modified Chaplygin gas as the fluid source. Associated with the scalar field model, we have determined the Hubble parameter as a generating…

广义相对论与量子宇宙学 · 物理学 2021-12-02 Ujjal Debnath

In this work, FRW universe filled with dark matter (perfect fluid with negligible pressure) along with dark energy in the background of Galileon gravity is considered. Four dark energy models with different EoS parametrizations have been…

广义相对论与量子宇宙学 · 物理学 2015-09-09 Prabir Rudra , Chayan Ranjit , Sujata Kundu

In the current study, we have reconstructed variable modified Chaplygin gas in the Barrow holographic dark energy framework motivated by many recent studies. We have validated the generalized second law of thermodynamics for the…

广义相对论与量子宇宙学 · 物理学 2025-12-02 Sanjeeda Sultana , Chayan Ranjit , Surajit Chattopadhyay

In the framework of $f(Q)$ gravity, where gravity emerges from non-metricity $Q$, we explore the cosmological implications of its non-minimal coupling to matter. Inspired by the recent success of Chaplygin gas models in explaining dark…

广义相对论与量子宇宙学 · 物理学 2025-10-28 Nakul Aggarwal , Ali Pourmand , Fatimah Shojai , Harish Parthasarathy

We present the first constraints on the full parameter space of the Galileon modified gravity model, considering both the cosmological parameters and the coefficients which specify the additional terms in the Lagrangian due to the Galileon…

宇宙学与河外天体物理 · 物理学 2013-10-21 Alexandre Barreira , Baojiu Li , Ariel Sanchez , Carlton M. Baugh , Silvia Pascoli

We investigate the linear growth function for the large scale structures of the universe considering modified Chaplygin gas as dark energy. Taking into account observational growth data for a given range of redshift from the Wiggle-Z…

宇宙学与河外天体物理 · 物理学 2015-06-16 B. C. Paul , P. Thakur

In this study, we investigate two dark energy models, MCJG and MCAG, in the context of $f(T)$ gravity within a non-flat FLRW Universe. Our analysis considers radiation, dark matter, and dark energy components. We compare the equation of…

广义相对论与量子宇宙学 · 物理学 2024-01-24 Himanshu Chaudhary , Ujjal Debnath , Tanusree Roy , Sayani Maity , G. Mustafa , Monika Arora

We investigate observational constraints on the generalized Chaplygin gas (GCG) model including the gamma-ray bursts (GRBs) at high redshift obtained directly from the Union2 type Ia supernovae (SNe Ia) set. By using the Markov Chain Monte…

宇宙学与河外天体物理 · 物理学 2011-06-02 Nan Liang , Lixin Xu , Zong-Hong Zhu

In this work, we have considered the flat FRW model of the universe in $(n+2)$-dimensions filled with the dark matter and the magnetic field. We present the Hubble parameter in terms of the observable parameters $\Omega_{m0}$ and $H_{0}$…

综合物理 · 物理学 2013-04-05 Chayan Ranjit , Shuvendu Chakraborty , Ujjal Debnath

We study cosmological models with modified Chaplygin gas (in short, MCG) to determine observational constraints on its EoS parameters. The observational data of the background and the growth tests are employed. The background test data…

宇宙学与河外天体物理 · 物理学 2015-04-02 Bikash Chandra Paul , Prasenjit Thakur , Aroonkumar Beesham

We investigate cosmological constraints on the Variable Chaplygin gas model parameters with latest observational data of the Fast Radio Bursts and compare the results with previous constraints obtained using SNe Ia (Pantheon+SHOES), Gamma…

宇宙学与河外天体物理 · 物理学 2024-04-25 Geetanjali Sethi , Udish Sharma , Nadia Makhijani

We explore the cosmic expansion history within the framework of Galileon gravity by employing a redshift-based expression for the Hubble rate, $H(z)$, derived from the CPL parametrization $\omega_{DE}(z)=\omega_{0}+\omega_{a}\frac{z}{1+z}$.…

宇宙学与河外天体物理 · 物理学 2025-08-21 Amit Samaddar , S. Surendra Singh
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