Results 111 to 120 of about 540,486 (189)

Shedding light on gravity: Black hole shadows and lensing signatures in Lorentz gauge theory

Nuclear Physics B
Recent advances, including gravitational wave detections and imaging of black hole shadows, have strongly validated general relativity. Nevertheless, ongoing cosmological observations suggest potential limitations of general relativity, spurring interest
Ali Övgün, Mohsen Fathi
doaj   +1 more source

Dark Energy and Modified Gravities

Вестник Томского государственного педагогического университета, 2004
We review the several models of the dark energy, which may generate the accelerated expansion of the present universe. We also discuss the the Big Rip singularity, which may occur when the equation of the state parameter w is less than -1. We show that the quantum correction would be very important near the singularity.
openaire   +3 more sources

MODIFIED GRAVITY AND GRAVITATIONAL REPULSION

Particle Physics at the Year of Centenary of Bruno Pontecorvo, 2015
n ...
Elena Arbuzova, Alexander D. Dolgov
openaire   +2 more sources

COSMIC ACCELERATION AND MODIFIED GRAVITY

International Journal of Modern Physics D, 2007
I briefly discuss some attempts to construct a consistent modification to general relativity (GR) that might explain the observed late-time acceleration of the Universe and provide an alternative to dark energy. I describe the issues facing extensions to GR, illustrate these with a specific example, and discuss the resulting observational and ...
openaire   +2 more sources

Mechanism and efficiency analysis of carbon dioxide capture by modified 13X molecular sieve enhanced by high-gravity technology

Adsorption Science & Technology
13X molecular sieve (MS) was modified with diethylenetriamine (DETA) using a high-gravity rotating adsorption bed, and subsequent carbon dioxide (CO 2 ) adsorption experiments were conducted in a high-gravity rotating adsorption bed. The results indicate
Qiang Guo, Jiahao Niu, Guisheng Qi
doaj   +1 more source

Modified gravity from the nonperturbative quantization of a metric. [PDF]

Eur Phys J C Part Fields, 2015
Dzhunushaliev V, Folomeev V, Kleihaus B, Kunz J.   +3 more
europepmc   +1 more source

Modified Gravity: From Black Holes Entropy to Current Cosmology, 4th Edition. [PDF]

Entropy (Basel)
Bamba K.
europepmc   +1 more source

Modified Gravity in the Presence of Matter Creation: Scenario for the Late Universe. [PDF]

Entropy (Basel)
Montani G, Carlevaro N, De Angelis M.
europepmc   +1 more source

Galactic Dynamics: newtonian gravity & modified gravity

, 2008
La dynamique des systèmes gravitationnels s'appuie traditionnellement sur la physique de Newton. Appliquée à l'échelle des galaxies, la gravitation newtonienne impose l'existence d'une certaine matière, actuellement invisible : la matière noire.
openaire   +1 more source

Isotropic fluid structures and role of non-metricity on their dynamics governed by an electric charge: A theoretical study. [PDF]

PLoS One
Naseer T, Sharif M, Waqas M, Andrade J, Emara A.   +4 more
europepmc   +1 more source