Results 31 to 40 of about 174,751,317 (275)
Journal of High Energy Physics, 2021 We assume that the points in volumes smaller than an elementary volume (which may have a Planck size) are indistinguishable in any physical experiment. This naturally leads to a picture of a discrete space with a finite number of degrees of freedom per ...
Ali H. Chamseddine, Viatcheslav Mukhanov
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Quantum gravity states, entanglement graphs and second-quantized tensor networks
Journal of High Energy Physics, 2021 In recent years, the import of quantum information techniques in quantum gravity opened new perspectives in the study of the microscopic structure of spacetime.
Eugenia Colafranceschi, Daniele Oriti
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Lattice Models of Quantum Gravity
, 1998 Standard Regge Calculus provides an interesting method to explore quantum gravity in a non-perturbative fashion but turns out to be a CPU-time demanding enterprise. One therefore seeks for suitable approximations which retain most of its universal features. The $Z_2$-Regge model could be such a desired simplification. Here the quadratic edge lengths $q$
Bittner, E. +5 more
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Discrete gravity as a topological field theory with light-like curvature defects
Journal of High Energy Physics, 2017 I present a model of discrete gravity as a topological field theory with defects. The theory has no local degrees of freedom and the gravitational field is trivial everywhere except at a number of intersecting null surfaces.
Wolfgang Wieland
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Spontaneous Cyclic Levitation of Glycerol-Water Droplets at Low Pressures. [PDF]
Adv Sci (Weinh)Under low pressure, a minute glycerol addition transforms the chaotic dynamics of freezing water droplets into cyclic levitation. Freeze‐concentration preserves liquid pathways that relax expansion‐induced stress, while freezing point depression weakens asymmetric vaporization recoil.
Xu C +10 more
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Static Drainage H<sub>2</sub>/O<sub>2</sub> PEM Fuel Cells Enabled by Water Transport Plates: Pore-Scale Design and Transport Mechanisms. [PDF]
Adv Sci (Weinh)The WTP is a key component of static drainage PEMFCs, enabling cathode water removal and gas sealing through capillary forces. This work investigates the mechanisms governing WTP drainage and sealing performance and develops predictive approaches for WTP design optimization.
Guo M, Qiu D, Zhu D, Peng L.
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Synthetic gravitational horizons in low-dimensional quantum matter
Physical Review Research, 2021 We propose a class of lattice models realizable in a wide range of setups whose low-energy dynamics exactly reduces to Dirac fields subjected to (1+1)-dimensional [(1+1)D] gravitational backgrounds, including (anti-)de Sitter space-time.
Corentin Morice +4 more
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Quantum gravity, the Planck lattice and the Standard Model
, 1995 Invited Talk at the ``VII Marcel Grossman Meeting on General Relativity'' - Stanford, July 1994. 14 pages, latex, five figures, which will be available upon request.
Preparata, Giuliano, Xue, She-Sheng
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Lattice Quantum Gravity: EDT and CDT [PDF]
, 2023 This article is an overview of the use of so-called Euclidean Dynamical Triangulations (EDT) and Causal Dynamical Triangulations (CDT) as lattice regularizations of quantum gravity. The lattice regularizations have been very successful in the case of two-
Ambjorn, Jan
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A lattice bosonic model as a quantum theory of gravity
, 2006 A local quantum bosonic model on a lattice is constructed whose low energy excitations are gravitons described by linearized Einstein action. Thus the bosonic model is a quantum theory of gravity, at least at the linear level. We find that the compactification and the discretization of metric tenor are crucial in obtaining a quantum theory of gravity.
Gu, Zheng-Cheng, Wen, Xiao-Gang
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