Confirmation of accelerated expansion the universe probed concept dark energy theory, and since then, numerous models have been introduced to explain its origin nature. The present work is based on reconstructing by parametrization deceleration parameter in FRW filled with radiation, matter, energy. We chosen some well-motivated parametrized 1-3 an attempt investigate density terms parameters estimating cosmological help different observational datasets. Also, we a new model 4 for parameter....

This paper reflects a study on the thermodynamic features of charged rotating Kerr–Sen–AdS black holes discussed with an extended phase space, where negative cosmological constant is accounted for pressure. Thermal stability/instability and dependency transition points parameters hole have been further. The authors systematically studied throttling process considering its mass identified by enthalpy. Moreover, phenomenon Joule–Thomson expansion has explored, inversion temperature...

<title>Abstract</title> In this work, we explore the parameter constraints of two dark energy models, namely Modified Chaplygin-Jacobi gas (MCJG) and Chaplygin-Abel (MCAG), within context $f(T)$ gravity model in a non-flat Friedmann-Lema\^itre-Robertson-Walker (FLRW) Universe. Our investigation involves comparing equation state for MCJG MCAG models with derived from model. To derive use recent astronomical datasets, including $H(z)$ data, type Ia supernovae observations, Gamma Ray Bursts...

In this work, we attempt to study the thermodynamic behavior of static Van der Waals (VdW) black hole with an anti-de Sitter (AdS) background in extended phase space. Treating negative cosmological constant as pressure, obtain expressions for enthalpy, Gibb’s free energy and Helmholtz energy. We stability Joule–Thomson expansion hole. Next, construct a heat engine by considering VdW working substance. investigate maximum efficiency Carnot cycle. also discuss work done new engine. Finally, Rankine

Inspired by the pronounced effect of gravity’s Rainbow on black hole thermodynamics, entropy relations and bounds have been investigated for [Formula: see text]-dimensional Reissner–Nordström (RN) in framework gravity. Basic thermodynamic properties derived event horizon Cauchy horizon. Except radius, they all crucially depend functions. Bounds aforesaid quantities deduced both horizons. Analyzing specific heat capacity, stability conditions obtained. Also, extremal phase has explored....

In this paper, we have explored the thermodynamic properties of static Modified Bardeen black hole in background Anti-de Sitter (AdS) extended phase space. Thermodynamic pressure is taken as a variable, defined by negative cosmological constant. We discussed quantities like Hawking temperature, Gibbs energy and Helmholtz free along with specific heat capacity to analyze stability. Next, Joule–Thomson expansion has been evaluated determine cooling-heating transition. Followed these,...

In this work, we explore the parameter constraints of two dark energy models, namely Modified Chaplygin–Jacobi gas (MCJG) and Chaplygin–Abel (MCAG), within context [Formula: see text] gravity model in a non-flat Friedmann–Lemaître–Robertson–Walker (FLRW) universe. Our investigation involves comparing equation state for MCJG MCAG models with derived from model. To derive use recent astronomical datasets, including data, type Ia supernovae observations, Gamma Ray Bursts quasar Baryon Acoustic...

Confirmation of accelerated expansion the universe probed concept dark energy theory, and since then, numerous models have been introduced to explain its origin nature. The present work is based on reconstructing by parametrization deceleration parameter in FRW filled with radiation, matter, energy. We chosen some well-motivated parametrized 1-3 an attempt investigate density terms parameters estimating cosmological help different observational datasets. Also, we a new model 4 for parameter....

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, matter, components. We compare equation state for MCAG with gravity. Using recent astronomical data (e.g., $H(z)$, type Ia supernovae, Gamma Ray Bursts, quasars, BAO), constrain models' parameters explore Universe's behavior. The reduced Hubble parameter is expressed terms observable like $\Omega_{r0}$, $\Omega_{m0}$,...

The concept of dark energy (DE) emerged as a result confirming the accelerated expansion universe. Since then, numerous models have been developed to explore origin and nature DE. In this study, we investigate several recent cosmological (Models 1–9) based on parametrization DE equation state. Our analysis focuses homogeneous, isotropic flat universe comprising DE, matter (DM), radiation. We assume separate conservation components (DE DM) By employing various parametrizations [Formula: see...

Inspired by the pronounced effect of gravity’s rainbow on black hole thermodynamics, entropy relations and bounds have been investigated for d -dimensional Reissner-Nordstr¨om (RN) in framework gravity. Basic thermodynamic properties derived event horizon Cauchy horizon. Except radius, they all crucially depend functions. Next, product, irreducible mass temperature Komar energy product calculated along with their sum/difference, universality has checked. Using these relations, aforesaid...

Einstein’s general relativity was modified to the Rastall gravity by generalising energy-momentumconservation law Tμν;μ = λRv and this change in covariant conservation of Tμνthe thermodynamic characteristics also show some interesting properties. Here we discuss thethermodynamics, phase transition, stability heat engine construction a Kerr-Newman-NUTKiselev-AdS black hole 4D gravity. We consider space be surrounded darkenergy, specific perfect fluid matter. The dark energy has significant...