The holographic cut-off, in the formalism of generalized dark energy (HDE), is to depend on $L_\mathrm{IR} = L_\mathrm{IR} \left( L_\mathrm{p}, \dot \ddot \cdots, L_\mathrm{f}, a\right)$, where $L_\mathrm{p}$ and $L_\mathrm{f}$ are particle horizon future respectively, $a$ scale factor universe. Based such formalism, we showed that Barrow entropic (DE) model equivalent HDE respective cut-off de...

The possibility of strange stars mixed with dark energy to be one of candidates for dark energy stars is the main issue of the present study. Our investigation shows that quark matter is acting as dark energy after certain yet unknown critical condition inside the quark stars. Our proposed model reveals that strange stars mixed with dark energy feature not only a physically acceptable stable mo...

We study the full history of the universe in the presence of inflaton, matter, radiation, and holographic dark energy. The time evolution of the scale factor is obtained by solving the Friedmann equation of the universe without artificial ansatz. We discuss that the second law of thermodynamics dictates the accelerating expansion of the dark energy dominant phase to the universe. In addition, w...

Modern cosmological research rests heavily on observational data. Any theoretical model should be corroborated with observation for understanding the viability of that model. Present cosmological picture, emerging out of this theory-observation combination, reveals that, the total energy-density of the Universe is dominated by two dark components, viz., dark matter and dark energy. Observationa...

Dark energy can be studied by its influence on the expansion of the Universe as well as on the growth history of the large-scale structure. In this paper, we follow the growth of the cosmic density field in early dark energy cosmologies by combining observations of the primary CMB temperature and polarisation power spectra at high redshift, of the CMB lensing deflection field at intermediate re...

Our universe is observed to be accelerating due to the dominant dark energy with negative pressure. The dark energy equation of state (w) holds a key to understanding the ultimate fate of the universe. The cosmic voids behave like bubbles in the universe so that their shapes must be quite sensitive to the background cosmology. Assuming a flat universe and using the priors on the matter density ...

We look at dark energy from a biology inspired viewpoint by means of the Approximate Bayesian Computation (ABC) and late time cosmological observations. find that dynamical comes out on top, or in ABC language naturally selected, over standard ΛCDM scenario. confirm this conclusion is robust to whether baryon acoustic oscillations Hubble constant priors are considered. Our results show algorith...

We study the statefinder parameters in the Yang-Mills condensate dark energy models, and find that the evolving trajectories of these models are different from those of other dark energy models. We also define two eigenfunctions of the Yang-Mills condensate dark energy models. The values of these eigenfunctions are quite close to zero if the equation-of-state of the YangMills condensate is not ...