Results 91 to 100 of about 137,892 (317)
Loop quantization of the Schwarzschild black hole [PDF]
, 2013 We quantize spherically symmetric vacuum gravity without gauge fixing the diffeomorphism constraint. Through a rescaling, we make the algebra of Hamiltonian constraints Abelian and therefore the constraint algebra is a true Lie algebra.
Gambini, Rodolfo, Pullin, Jorge
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Gauge-invariant bounce from loop quantum gravity [PDF]
Classical and quantum gravity, 2019 We present a gauge-invariant treatment of singularity resolution using loop quantum gravity techniques with respect to local SU(2) transformations. Our analysis reveals many novel features of quantum geometry which were till now hidden in models based on
K. Liegener, Parampreet Singh
semanticscholar +1 more source
Adsorption and Separation by Flexible MOFs
Advanced Materials, EarlyView.Flexible metal–organic frameworks (MOFs) present significant potential for gas storage and separation due to their structural dynamic. This review explores the rationale behind the flexible MOFs' enhanced working capacity and separation factors. It also addresses key challenges, including phase transition kinetics, crystal robustness, cycling, shaping,
Irena Senkovska +4 more
wiley +1 more source
Advanced Materials, EarlyView.This article summarizes significant technological advancements in materials, photonic devices, and bio‐interfaced systems, which demonstrate successful applications for impacting human healthcare via improved therapies, advanced diagnostics, and on‐skin health monitoring.
Seunghyeb Ban +5 more
wiley +1 more source
No fermion doubling in quantum geometry
Physics Letters B, 2015 In loop quantum gravity the discrete nature of quantum geometry acts as a natural regulator for matter theories. Studies of quantum field theory in quantum space–times in spherical symmetry in the canonical approach have shown that the main effect of the
Rodolfo Gambini, Jorge Pullin
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Does a Theory of Everything Exist?
Философия и космология, 2021 Since Einstein’s failure to define a Grand Unified Theory, physicists have pursued a comprehensive theory explaining nature, a Theory of Everything. But because General Relativity, Quantum Field Theory, and Cosmology have little in common, defining one ...
James R Johnson
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Quantum Transfiguration of Kruskal Black Holes [PDF]
, 2018 We present a new effective description of macroscopic Kruskal black holes that incorporates corrections due to quantum geometry effects of loop quantum gravity.
Ashtekar, Abhay +2 more
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Space and Time in Loop Quantum Gravity [PDF]
Beyond Spacetime, 2018 Quantum gravity is expected to require modifications of the notions of space and time. I discuss and clarify how this happens in Loop Quantum Gravity. (Contribution to the volume "Beyond Spacetime: The Philosophical Foundations of Quantum Gravity" edited
C. Rovelli
semanticscholar +1 more source
Recent Advances in Wide‐Bandgap Perovskite Solar Cells
Advanced Materials, EarlyView.Ubiquitous defects predominately account for photo‐instability and open‐circuit voltage losses in wide‐bandgap perovskite solar cells (WBG PSCs). This review comprehensively presents the underlying impact mechanisms, summarizes the advanced optimization strategies across various functional layers and their interfaces to develop efficient and stable WBG
Jianjun Mei, Feng Yan
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Introduction to Loop Quantum Gravity [PDF]
Proceedings of 5th International School on Field Theory and Gravitation — PoS(ISFTG), 2009 The questions I have been asked during the 5th International School on Field Theory and Gravitation, have compelled me to give an account of the premises that I consider important for a beginner's approach to Loop Quantum Gravity. After a description of some general arguments and an introduction to the canonical theory of gravity, I review the ...
openaire +3 more sources