Results 41 to 50 of about 2,494 (198)
THE PROCA FIELD IN LOOP QUANTUM GRAVITY [PDF]
The Eleventh Marcel Grossmann Meeting, 2007 15 pages.
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(b,v)-type variables for black to white hole transitions in effective loop quantum gravity
Physics Letters B, 2021 Quantum gravity effects in effective models of loop quantum gravity, such as loop quantum cosmology, are encoded in the choice of so-called polymerisation schemes.
Norbert Bodendorfer +2 more
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Optical Manipulation of Whispering Gallery Mode Microlasers for Controlled Cellular Delivery
Advanced Optical Materials, EarlyView.Optically trapped whispering‑gallery microlasers are precisely positioned onto non‐phagocytic mammalian cells to report local refractive‑index changes in real time. Time‑dependent wavelength shifts reveal successive stages from membrane contact to internalization.
Soraya Caixeiro +3 more
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Enhanced Formation of Dicarboxylic Acids in the Catalytic Oxidation of Polyethylene With O2 and NOx
Angewandte Chemie, EarlyView.The oxidation of polyethylene in the presence of a mixture of O2 and NOx and with Cu2+/V5+ as catalyst yields ∼51 mol% diacids, while retaining ∼80 mol% of the carbon in the oil fraction. The developed method is robust and tolerates several polymer types as well as impurities.
Tom J. Smak +3 more
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Loop quantum cosmology and singularities
Scientific Reports, 2017 Loop quantum gravity is believed to eliminate singularities such as the big bang and big crunch singularity. This belief is based on studies of so-called loop quantum cosmology which concerns symmetry-reduced models of quantum gravity. In this paper, the
Ward Struyve
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Polytopes in all dimensional loop quantum gravity
European Physical Journal C: Particles and Fields, 2022 The Lasserre’s reconstruction algorithm is extended to the D-polytopes with the construction of their shape space. Thus, the areas of d-skeletons $$(1\le d\le D)$$ ( 1 ≤ d ≤ D ) can be expressed as functions of the areas and normal bi-vectors of the (D-1)
Gaoping Long, Yongge Ma
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Advanced Science, EarlyView.Fully programmable, in‐process 3D magnetization integrated with multi‐material printing enables soft magnetic systems with precise actuation and sensing. Discrete and continuous magnetization profiles drive bending, morphing, and locomotion, demonstrated through strain‐sensing elements, dragonfly‐inspired wings, octopus‐like tentacles, and a serpentine
Phillip Glass +5 more
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Black holes in loop quantum gravity [PDF]
Reports on Progress in Physics, 2017 Typos corrected, references corrected.
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HOLOGRAPHY FROM LOOP QUANTUM GRAVITY [PDF]
International Journal of Modern Physics D, 2008 We show that holography follows directly from the basic structure of spherically symmetric loop quantum gravity. The result is not dependent on detailed assumptions about the dynamics of the theory being considered. It ties strongly the amount of information contained in a region of space to the tight mathematical underpinnings of loop quantum ...
Gambini, Rodolfo, Pullin, Jorge
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A new vacuum for loop quantum gravity [PDF]
Classical and Quantum Gravity, 2015 We construct a new vacuum for loop quantum gravity, which is dual to the Ashtekar-Lewandowski vacuum. Because it is based on BF theory, this new vacuum is physical for $(2+1)$-dimensional gravity, and much closer to the spirit of spin foam quantization in general. To construct this new vacuum and the associated representation of quantum observables, we
Dittrich, Bianca, Geiller, Marc
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