Results 11 to 20 of about 535 (134)
Primordial perturbations in kinetically dominated regimes of general relativity and hybrid quantum cosmology [PDF]
Physical Review D, 2021 17 ...
BEATRIZ Elizaga Navascues +1 more
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Quantum cosmology of pure connection general relativity
Classical and Quantum Gravity, 2023 Abstract We study homogeneous cosmological models in formulations of general relativity with cosmological constant based on a (complexified) connection rather than a spacetime metric, in particular in a first order theory obtained by integrating out the self-dual two-forms in the chiral Plebański formulation.
Gielen, S., Nash, E.
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A scientometric study of general relativity and quantum cosmology from 2000 to 2012 [PDF]
Scientometrics, 2015 2015 is the centennial of Einstein General Relativity. On this occasion, we examine the General Relativity and Quantum Cosmology (GRQC) field of research by analysing 38291 papers uploaded on the electronic archives arXiv.org from 2000 to 2012. We establish a map of the countries contributing to GRQC in 2012.
Stephane Fay, Sebastien Gautrias
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SSRN Electronic Journal, 2023 In cosmological special relativity theory, we study Maxwell equations, electromagnetic wave equations and functions. In the cosmological special theory of relativity, we study energy?momentum relations, the Klein-Gordon equation and wave functions. If we solve the Klein?Gordon equation, we obtain the Yukawa potential in the cosmological inertial frame.
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ON THE RUNNING OF THE COSMOLOGICAL CONSTANT IN QUANTUM GENERAL RELATIVITY [PDF]
Modern Physics Letters A, 2010 We present arguments that show what the running of the cosmological constant means when quantum general relativity is formulated following the prescription developed by Feynman.
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Beyond General Relativity: Models for Quantum Gravity, Loop Quantum Cosmology and Black Holes [PDF]
Universe, 2020 In the past two decades, we have witnessed extraordinary progress in precision measurements in cosmology [...]
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Running of the cosmological constant and estimate of its value in quantum general relativity [PDF]
Modern Physics Letters A, 2015 We present the connection between the running of the cosmological constant and the estimate of its value in the resummed quantum gravity (RQG) realization of quantum general relativity. We also address in this way some of the questions that have been raised concerning this latter generalization and application of the original prescription of Feynman ...
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Analytical investigation of pre-inflationary effects in the primordial power spectrum: from General Relativity to hybrid Loop Quantum Cosmology [PDF]
Journal of Cosmology and Astroparticle Physics, 2021 This work is an analytical study of the main differences between classical inflationary effects of a fast-roll regime and imprints of hybrid Loop Quantum Cosmology (LQC) on the primordial power spectrum. Effective LQC solutions of phenomenological interest typically contain a classical period of kinetic dominance prior to slow-roll inflation, with ...
Elizaga Navascués, Beatriz +1 more
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Aspects of Quantum Theory in General Relativity and Cosmology
, 2020 After a brief introduction to Cosmology some quantum aspects of General Relativity and cosmology are presented. The radial motion of a massive particles in the ergosphere of the Kerr Black Hole is considered. Screening of Hawking radiation and shielding of the Penrose process is examined in the context of the region of negative energy inside the ...
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Photonic‐Enabled Energy‐Efficient Transparent Neuromorphic Computing Devices: A Review
Advanced Science, EarlyView.Transparent photonic neuromorphic computing devices merge optics and brain‐inspired computing to overcome von Neumann bottlenecks with ultrafast, low‐energy processing. By exploiting transparent oxides, 2D materials, phase‐change materials, and hybrid heterostructures, these platforms enable photonic synapses, memory, and logic for see‐through edge ...
Shuvaraj Ghosh +8 more
wiley +1 more source