Results 91 to 100 of about 115,765 (198)
Path Integrals and the WKB approximation in Loop Quantum Cosmology
We follow the Feynman procedure to obtain a path integral formulation of loop quantum cosmology starting from the Hilbert space framework. Quantum geometry effects modify the weight associated with each path so that the effective measure on the space of ...
Ashtekar, Abhay +2 more
core +1 more source
Abstract Airglow layers are powerful tracers of upper‐atmosphere dynamics because of their sensitivity to a broad spectrum of atmospheric wave phenomena. Seismic activity, and in particular Rayleigh waves, constitutes a forcing mechanism capable of generating infrasonic waves in the atmosphere.
P.‐Y. Froissart +4 more
wiley +1 more source
p-Adic and Adelic Cosmology: p-Adic Origin of Dark Energy and Dark Matter
A brief review of p-adic and adelic cosmology is presented. In particular, p-adic and adelic aspects of gravity, classical cosmology, quantum mechanics, quantum cosmology and the wave function of the universe are considered.
Dragovich, Branko
core +2 more sources
ABSTRACT This research note advances the idea of a talanoa epistemology. Many readers will be familiar with talanoa as an Indigenous mode of communication practiced in the Pacific. Variations of talanoa have been applied in COP constellations, inter‐faith meetings, Pacific diplomacy, conflict resolution, and as a research method.
Simon Hollis
wiley +1 more source
Cosmology from quantum potential
It was shown recently that replacing classical geodesics with quantal (Bohmian) trajectories gives rise to a quantum corrected Raychaudhuri equation (QRE).
Ahmed Farag Ali, Saurya Das
doaj +1 more source
Bounce Loop Quantum Cosmology Corrected Gauss-Bonnet Gravity
We develop a Gauss-Bonnet extension of Loop Quantum Cosmology, by introducing holonomy corrections in modified $F(\mathcal{G})$ theories of gravity.
Haro, J. +4 more
core +2 more sources
A New Padé Approach to Modeling Wormholes in Dekel‐Zhao Dark Matter Halos
A matter‐first Padé strategy is introduced to build traversable wormholes from prescribed dark‐matter halos. Rational Padé fits approximately the Dekel–Zhao density and are analytically integrated to obtain a shape function that exactly reproduces the intended matter content, avoiding spurious poles of geometry‐first schemes.
Jonathan Alves Rebouças +4 more
wiley +1 more source
Inflationary cosmology in modified gravity theories
We review inflationary cosmology in modified gravity such as $R^2$ gravity with its extensions in order to generalize the Starobinsky inflation model. In particular, we explore inflation realized by three kinds of effects: modification of gravity, the ...
Bamba, Kazuharu, Odintsov, Sergei D.
core +2 more sources
A Re‐Examination of Foundational Elements of Cosmology
ABSTRACT This paper undertakes a conceptual re‐examination of several foundational elements of cosmology through the lens of spacetime symmetries. A new derivation of the Friedmann–Lemaître–Robertson–Walker metric is obtained by a careful conceptual examination of rotations and translations on generic manifolds, followed by solving the rotational and ...
Lavinia Heisenberg
wiley +1 more source
Classical and quantum cosmology of Fab Four John theories
We study the John term of Fab Four cosmology in the presence of a scalar potential. We show here how this theory can describe a wide range of cosmological solutions.
Isaac Torres +2 more
doaj +1 more source

