Zobrazeno 1 - 10
of 339
pro vyhledávání: '"Jalalzadeh, S."'
This study examines the possibility of starting the process of collapsing and forming stars from a fractional molecular cloud. Although the Verlinde's approach is employed to derive the corresponding gravitational potential, the results are easily ge
Externí odkaz:
http://arxiv.org/abs/2409.12869
This study explores the compatibility of Covariant Extrinsic Gravity (CEG) with current cosmological observations. We employ the chi-square statistic and Markov Chain Monte Carlo (MCMC) methods to fit the FLRW and Bianchi type-I and V brane models to
Externí odkaz:
http://arxiv.org/abs/2407.15565
Publikováno v:
Class. Quantum Grav. 41 165006 (2024)
We propose that the spectrum of the surface area of the apparent horizon (AH) of de Sitter (dS) spacetime leads to corrected temperature and entropy of the dS spacetime, offering new insights into its thermodynamic properties. This is done by employi
Externí odkaz:
http://arxiv.org/abs/2405.12314
From a fractal perspective, the entropy bound of gravitational systems undergoes changes. Furthermore, in the cosmological setting, the conservation law of a perfect fluid is also altered in such systems, affecting spatial elements like volume, area,
Externí odkaz:
http://arxiv.org/abs/2404.06986
Publikováno v:
Eur. Phys. J. Plus 138, 862 (2023)
Based on Padmanabhan's theory, the spatial expansion of the Universe can be explained by the emergence of space as cosmic time progresses. To further explore this idea, we have developed fractional-fractal Friedmann and Raychaudhuri equations for an
Externí odkaz:
http://arxiv.org/abs/2309.12478
Publikováno v:
Phys. Dark Univ. 42 (2023) 101320
In Ref. [S. Jalalzadeh, Phys. Lett. B 829 (2022) 137058], Jalalzadeh established that the thermodynamical entropy of a quantum-deformed black hole with horizon area $A$ can be written as $S_q=\pi\sin\left(\frac{A}{8G\mathcal N} \right)/\sin\left(\fra
Externí odkaz:
http://arxiv.org/abs/2308.12089
Publikováno v:
Phys. Dark Universe, 41 (2023) 101235
We investigate the isometrically embedded Bianchi type-V cosmology braneworld model in a $D$-dimensional bulk space. The model provides a fluid of geometric dark energy (GDE) and unification of fundamental forces similar to the Kaluza--Klein (KK) the
Externí odkaz:
http://arxiv.org/abs/2304.07229
Publikováno v:
Eur. Phys. J. Plus (2024) 139:170
Is thermodynamics consistent with the quantum gravity reconciliation hypothesis [A. G. Cohen et al. Phys. Rev. Lett. 82, 4971 (1999)], which establishes holographic dark energy models? Here, we have attempted to address this issue in the affirmative
Externí odkaz:
http://arxiv.org/abs/2304.06494
Publikováno v:
Phys. Dark Universe, 40 (2023) 101227
This work studies the quantum cosmology of a closed, spatially homogeneous, and isotropic FLRW minisuperspace model with electromagnetic radiation as a matter content. We solve the associated Wheeler-DeWitt (WDW) equation using the holographic regula
Externí odkaz:
http://arxiv.org/abs/2210.02629
Publikováno v:
Fractal Fract. 2022, 6, 655
The Wheeler--DeWitt equation for a flat and compact Friedmann--Lema\^{i}tre--Robertson--Walker cosmology at the pre-inflation epoch is studied in the contexts of the standard and fractional quantum cosmology. Working within the semiclassical regime a
Externí odkaz:
http://arxiv.org/abs/2210.00909