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Euler–Heisenberg Black Hole Surrounded by Quintessence in the Background of Perfect Fluid Dark Matter: Thermodynamics, Shadows, and Quasinormal Modes

Fortschritte der Physik, Volume 73, Issue 3, March 2025.
Abstract Current observations show that a significant fraction of the Universe is composed of dark energy and dark matter. In this paper, the simultaneous effects of these dark sectors on the Euler–Heisenberg black hole are investigated, using the quintessence matter field and perfect fluid to model them. In particular, the black hole's thermodynamics,
Bilel Hamil, Bekir Can Lütfüoğlu
wiley   +1 more source

Generalization of the Randall‐Sundrum Model Using Gravitational Model F(T, Θ)

Advances in High Energy Physics, Volume 2018, Issue 1, 2018., 2018
In this letter, we explore a generalized model based on two scenarios including the Randall‐Sundrum model and gravity model F(T, Θ). We first study the standard Randall‐Sundrum gravitational model and then add a function containing two parameters as torsion and trace energy‐momentum tensor to the main action of the model.
S. Davood Sadatian, S. M. Hosseini, George Siopsis   +2 more
wiley   +1 more source

Cascading Dark Energy

The Astrophysical Journal
The standard cosmological model is in the midst of a stress test, thanks to the tension between supernova-based measurements of the Hubble constant H _0 and inferences of its values from cosmic microwave background (CMB) anisotropies.
Kazem Rezazadeh, Amjad Ashoorioon, Daniel Grin   +2 more
doaj   +1 more source

Status on Bidimensional Dark Energy Parameterizations Using SNe Ia JLA and BAO Datasets

Galaxies, 2016
Using current observations of forecast type Ia supernovae (SNe Ia) Joint Lightcurve Analysis (JLA) and baryon acoustic oscillations (BAO), in this paper we investigate six bidimensional dark energy parameterizations in order to explore which has more ...
Celia Escamilla-Rivera
doaj   +1 more source

On the Square Speed of Sound in High‐Energy Collisions: Range of Values and How to Understand It

Advances in High Energy Physics, Volume 2025, Issue 1, 2025.
After reviewing the sound speeds in various forms and conditions of matter, we investigate the sound speed of hadronic matter that has decoupled from the hot and dense system formed during high‐energy collisions. We comprehensively consider factors such as energy loss of the incident beam, rapidity shift of leading nucleons, and the Landau hydrodynamic
Ting-Ting Duan, Fu-Hu Liu, Khusniddin K. Olimov, Xiao Yan Chew   +3 more
wiley   +1 more source

Inflation in f(R, ϕ) Gravity with Exponential Model

Advances in High Energy Physics, Volume 2018, Issue 1, 2018., 2018
We are taking action of f(R) gravity with a nonminimal coupling to a massive inflaton field. A f(R, ϕ) model is chosen which leads to the scalar-tensor theory which can be transformed to Einstein frame by conformal transformation. To avoid the vagueness of the frame dependence, we evaluate the exact analytical solutions for inflationary era in Jordan ...
Farzana Kousar, Rabia Saleem, M. Zubair, Torsten Asselmeyer-Maluga   +3 more
wiley   +1 more source

Cosmological extrapolation of MOND

, 2011
Regime of MOND, which is used in astronomy to describe the gravitating systems of island type without the need to postulate the existence of a hypothetical dark matter, is generalized to the case of homogeneous distribution of usual matter by introducing
Amanullah R, Bond J R, Chang Z Li M H Li X, Eisenstein D J, Hu W, Komatsu E, McGaugh S, McGaugh S, Milgrom M, Milgrom M, Milgrom M, Moffat J W, Moffat J W, Moffat J W Toth V T, Nakamura K, Riess A G, Riess A G, S A Timofeev, V V Kiselev, Verlinde E P, Visser M, Wood-Vasey W M   +21 more
core   +1 more source

Features of the Acoustic Mechanism of Core-Collapse Supernova Explosions [PDF]

, 2006
In the context of 2D, axisymmetric, multi-group, radiation/hydrodynamic simulations of core-collapse supernovae over the full 180$^{\circ}$ domain, we present an exploration of the progenitor dependence of the acoustic mechanism of explosion.
A. Burrows, C. D. Ott, E. Livne, Foglizzo T., J. Murphy, Janka H.-Th., L. Dessart, Moiseenko S. G.   +7 more
core   +2 more sources

Systematic Dynamical Analysis in Palatini f(R) Gravity

Advances in Astronomy, Volume 2024, Issue 1, 2024.
This paper aims to explore the evolution of the universe in the background of Palatini f(R) gravity. Considering Amendola Gannouji Polarski Tsujikawa (AGPT) f(R) gravity model, we perform a dynamical system analysis within the FLRW universe in order to analyze the impacts of this gravity model on large‐scale structure and dynamics of universe. With the
Fizza Saeed, Sehrish Iftikhar, Rubab Manzoor, Zeeshan Yousaf   +3 more
wiley   +1 more source

5σ tension between Planck cosmic microwave background and eBOSS Lyman-alpha forest and constraints on physics beyond ΛCDM

Physical Review Research
We find that combined Planck cosmic microwave background, baryon acoustic oscillations, and supernovae data analyzed under Λ cold dark matter (ΛCDM) are in 4.9σ tension with the extended Baryon Oscillation Spectroscopic Survey (eBOSS) Lyα forest in ...
Keir K. Rogers, Vivian Poulin
doaj   +1 more source