Results 101 to 110 of about 1,558,839 (324)
Quantum gravity in three dimensions, Witten spinors and the quantisation of length
, 2017 In this paper, I investigate the quantisation of length in euclidean quantum gravity in three dimensions. The starting point is the classical hamiltonian formalism in a cylinder of finite radius. At this finite boundary, a counter term is introduced that
Wieland, Wolfgang
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Advanced Functional Materials, EarlyView.In this study, the interplay of dipolar dynamics and ionic charge transport in MOF compounds is investigated. Synthesizing the novel structure CFA‐25 with integrated freely rotating dipolar groups, local and macroscopic effects, including interactions with Cs cations are explored.
Ralph Freund +6 more
wiley +1 more source
Spectral Geometry and Quantum Gravity [PDF]
, 1997 Recent progress in quantum field theory and quantum gravity relies on mixed boundary conditions involving both normal and tangential derivatives of the quantized field.
Esposito, Giampiero
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Left-Right Entanglement Entropy of Boundary States
, 2014 We study entanglement entropy of boundary states in a free bosonic conformal field theory. A boundary state can be thought of as composed of a particular combination of left and right-moving modes of the two-dimensional conformal field theory.
Quiroz, Norma, Zayas, Leopoldo A. Pando
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Advanced Functional Materials, EarlyView.This work presents an overview of the PTC‐VMD system for water‐hydrogen co‐generation. a) Illustration of the hydrogel‐based PTC membrane and the co‐generation of water and hydrogen. b) Structure of the PTC‐VMD system and the functions of each component layer.
Jiawei Sun +7 more
wiley +1 more source
Effective entropy of quantum fields coupled with gravity
Journal of High Energy Physics, 2020 Entanglement entropy, or von Neumann entropy, quantifies the amount of uncertainty of a quantum state. For quantum fields in curved space, entanglement entropy of the quantum field theory degrees of freedom is well-defined for a fixed background geometry.
Xi Dong +3 more
doaj +1 more source
Spectrum of end of the world branes in holographic BCFTs
Journal of High Energy Physics, 2021 We study overlaps between two regularized boundary states in conformal field theories. Regularized boundary states are dual to end of the world branes in an AdS black hole via the AdS/BCFT. Thus they can be regarded as microstates of a single sided black
Masamichi Miyaji +2 more
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Induced Dilaton in Topologically Massive Quantum Field Theory [PDF]
, 1998 We consider the conformally-invariant coupling of topologically massive gravity to a dynamical massless scalar field theory on a three-manifold with boundary.
Kogan, I. I., Momen, A., Szabo, R. J.
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Advanced Functional Materials, EarlyView.A metastable high‐vacancy concentration layered P3‐type Na0.5Cr0.5Ti0.5O2 negative electrode material has been synthesized from its K analogues P3‐type K0.5Cr0.5Ti0.5O2 using a facile room temperature ion‐exchange method. The P3‐type Na0.5Cr0.5Ti0.5O2 demonstrates a gravimetric capacity of 125 mA h g−1 and high‐rate performance (80% charging in 3 min ...
Alok K. Pandey +6 more
wiley +1 more source
Universe, 2018 We investigate the quantum geometry of a 2d surface S bounding the Cauchy slices of a 4d gravitational system. We investigate in detail for the first time the boundary symplectic current that naturally arises in the first-order formulation of general ...
Laurent Freidel, Alejandro Perez
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