Results 101 to 110 of about 467 (173)

Efficiently evaluating loop integrals in the EFTofLSS using QFT integrals with massive propagators

Journal of High Energy Physics
We develop a new way to analytically calculate loop integrals in the Effective Field Theory of Large Scale-Structure. Previous available methods show severe limitations beyond the one-loop power spectrum due to analytical challenges and computational and
Charalampos Anastasiou, Diogo P. L. Bragança, Leonardo Senatore, Henry Zheng   +3 more
doaj   +1 more source

Loop Quantum Gravity Vacuum with Nondegenerate Geometry

Symmetry, Integrability and Geometry: Methods and Applications, 2012
In loop quantum gravity, states of the gravitational field turn out to be excitations over a vacuum state that is sharply peaked on a degenerate spatial geometry.
Hanno Sahlmann, Tim Koslowski
doaj   +1 more source

On the Origin of Time and the Universe: A Modern Reappraisal through Quantum Cosmology, the Kalam Argument and Contemporary Scholarship

MetaScientia: Journal of the History and Philosophy of Science
This article reconsiders the origin of the universe by bringing quantum cosmology, the Kalam Cosmological Argument, and Islamic philosophical theology into dialogue while distinguishing more sharply between scientific description, philosophical ...
Sameer Al-Khawaja
doaj   +1 more source

Cosmological Perturbations in Loop Quantum Cosmology

, 2015
Presentación en Power Point con 32 diapositivas.
Mena Marugán, Guillermo A., Castelló Gomar, Laura, Fernández, Mikel, Olmedo, Javier   +3 more
openaire   +1 more source

Cosmological perturbations in Loop Quantum Cosmology

, 2017
Peer ...
Martín-Benito, Mercedes, Castelló Gomar, Laura, Mena Marugán, Guillermo A.   +2 more
openaire   +1 more source

Projective structures in loop quantum cosmology

Journal of Mathematical Analysis and Applications, 2015
Projective structures have successfully been used for the construction of measures in the framework of loop quantum gravity. In the present paper, we establish such structures for the configuration space $\mathbb{R}\sqcup \mathbb{R}_{\mathbb{Bohr}}$, recently introduced in the context of homogeneous isotropic loop quantum cosmology.
openaire   +2 more sources

On the evolution of the volume in Loop Quantum Cosmology

Classical and Quantum Gravity
Abstract The dynamics of the expectation value of the volume is one of the key ingredients behind the replacement of the Big Bang singularity by a bounce in Loop Quantum Cosmology. As such, it is of great importance that this quantity is mathematically well-defined in the space of physical states of the theory.
openaire   +2 more sources

Gravity and Cosmology in Kaniadakis Statistics: Current Status and Future Challenges. [PDF]

Entropy (Basel), 2022
Luciano GG.
europepmc   +1 more source

Constraints on Tsallis Cosmology from Big Bang Nucleosynthesis and the Relic Abundance of Cold Dark Matter Particles. [PDF]

Entropy (Basel), 2023
Jizba P, Lambiase G.
europepmc   +1 more source

100 years of mathematical cosmology: Models, theories and problems, Part B. [PDF]

Philos Trans A Math Phys Eng Sci, 2022
Cotsakis S, Yefremov AP.
europepmc   +1 more source