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Physical and Relativistic Numerical Cosmology

open access: yesLiving Reviews in Relativity, 1998
In order to account for the observable Universe, any comprehensive theory or model of cosmology must draw from many disciplines of physics, including gauge theories of strong and weak interactions, the hydrodynamics and microphysics of baryonic matter ...
Peter Anninos
doaj   +2 more sources

The Transcendental Method and Physical Cosmology: an Interdisciplinary Approach in the Research of Ukrainian and Anglo-American Philosophers [PDF]

open access: yesФилософия и космология, 2019
In modern science, an important feature is a fact that interdisciplinary research is becoming more popular. This is due to the mutual interest of different areas of science to the methods and principles of other areas.
Sergii Rudenko, Yaroslav Sobolievskyi
doaj   +1 more source

Instability of de-Sitter black hole with massive scalar field coupled to Gauss–Bonnet invariant and the scalarized black holes

open access: yesEuropean Physical Journal C: Particles and Fields, 2022
The black hole scalarization in a special Einstein-scalar–Gauss–Bonnet (EsGB) gravity has been widely investigated in recent years. Especially, the spontaneous scalarization of scalar-free black hole in de-Sitter (dS) spacetime possesses interesting ...
Zhen-Hao Yang   +3 more
doaj   +1 more source

On quasinormal frequencies of black hole perturbations with an external source

open access: yesEuropean Physical Journal C: Particles and Fields, 2020
In the study of perturbations around black hole configurations, whether an external source can influence the perturbation behavior is an interesting topic to investigate.
Wei-Liang Qian   +4 more
doaj   +1 more source

Gravitational lensing effects of black hole with conformally coupled scalar hair

open access: yesEuropean Physical Journal C: Particles and Fields, 2023
In this paper, we investigate the gravitational lensing effects in the weak and strong field limits of a static black hole with conformally coupled scalar field.
Qi Qi   +3 more
doaj   +1 more source

How barrow entropy modifies gravity: with comments on Tsallis entropy

open access: yesEuropean Physical Journal C: Particles and Fields, 2022
Barrow proposed that the area law of the horizon entropy might receive a “fractal correction” $$S\propto A^{1+\Delta /2}$$ S ∝ A 1 + Δ / 2 due to quantum gravitational effects, with $$0\leqslant \Delta \leqslant 1$$ 0 ⩽ Δ ⩽ 1 measures the deviation from ...
Sofia Di Gennaro, Hao Xu, Yen Chin Ong
doaj   +1 more source

Decoherence and Landauer’s principle in qubit-cavity quantum-field-theory interaction

open access: yesEuropean Physical Journal C: Particles and Fields, 2023
We consider quantum decoherence and Landauer’s principle in qubit-cavity quantum field theory (QFT) interaction, treating the qubit as the system and cavity QFT as the environment. In particular, we investigate the changes that occur in the system with a
Hao Xu, Si Yu Chen, Yen Chin Ong
doaj   +1 more source

Shadow revisiting and weak gravitational lensing with Chern-Simons modification

open access: yesPhysics Letters B, 2023
Dynamical Chern-Simons (dCS) gravity has been attracting plenty of attentions due to the fact that it is a parity-violating modified theory of gravity that corresponds to a well-posed effective field theory in weak coupling approximation.
Yuan Meng   +3 more
doaj   +1 more source

Transport properties of a 3-dimensional holographic effective theory with gauge-axion coupling

open access: yesPhysics Letters B, 2022
In this paper, we implement a 3-dimensional holographic effective theory with gauge-axion coupling. The analytical black hole solution is worked out. We investigate the Direct current (DC) thermoelectric conductivities.
Yi-Lin Li   +3 more
doaj   +1 more source

Charge transport properties in a novel holographic quantum phase transition model

open access: yesEuropean Physical Journal C: Particles and Fields, 2023
We investigate the features of charge transport in a novel holographic quantum phase transition (QPT) model with two metallic phases: normal metallic and novel metallic. The scaling behaviors of direct current (DC) resistivity and thermal conductivity at
Guoyang Fu   +4 more
doaj   +1 more source

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