Results 21 to 30 of about 37,719 (139)
The Newtonian Limit of Hermitian Gravity
, 2012 We construct the gauge invariant potentials of Hermitian Gravity and derive the linearized equations of motion they obey. A comparison reveals a striking similarity to the Bardeen potentials of general relativity. We then consider the response to a point
Christiaan L. M. Mantz +5 more
core +1 more source
The Lie-Poisson structure of the reduced n-body problem
, 2012 The classical n-body problem in d-dimensional space is invariant under the Galilean symmetry group. We reduce by this symmetry group using the method of polynomial invariants.
Albouy A +7 more
core +2 more sources
Unification Scale, Proton Decay, And Manifolds Of G_2 Holonomy [PDF]
, 2002 Models of particle physics based on manifolds of $G_2$ holonomy are in most respects much more complicated than other string-derived models, but as we show here they do have one simplification: threshold corrections to grand unification are particularly ...
Friedmann, Tamar, Witten, Edward
core +4 more sources
Relational Motivation for Conformal Operator Ordering in Quantum Cosmology
, 2009 Operator-ordering in quantum cosmology is a major as-yet unsettled ambiguity with not only formal but also physical consequences. We determine the Lagrangian origin of the conformal invariance that underlies the conformal operator-ordering choice in ...
Anderson, Edward
core +1 more source
Towards Kaluza-Klein Dark Matter on Nilmanifolds [PDF]
, 2016 We present a first study of the field spectrum on a class of negatively-curved compact spaces: nilmanifolds or twisted tori. This is a case where analytical results can be obtained, allowing to check numerical methods.
Andriot, David +4 more
core +3 more sources
Asymptotic Laplacian-Energy-Like Invariant of Lattices [PDF]
, 2014 Let $\mu_1\ge \mu_2\ge\cdots\ge\mu_n$ denote the Laplacian eigenvalues of $G$ with $n$ vertices. The Laplacian-energy-like invariant, denoted by $LEL(G)= \sum_{i=1}^{n-1}\sqrt{\mu_i}$, is a novel topological index.
Hu, Feng-Feng +3 more
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Advanced Science, EarlyView.Abstract The recent discovery of high‐critical‐temperature (high‐Tc) superconductivity in hydrides such as H3S and LaH10 has significantly advanced the quest for room‐temperature superconductors. This work reports a new class of high‐Tc hydrides in the Li–Hf–H system characterized by unknown one‐dimensional (1D) hydrogen chains.
Kang Yang +9 more
wiley +1 more source
Advanced Intelligent Discovery, EarlyView.Feature selection combined with machine learning and high‐throughput experimentation enables efficient handling of high‐dimensional datasets in emerging photovoltaics. This approach accelerates material discovery, improves process optimization, and strengthens stability prediction, while overcoming challenges in data quality and model scalability to ...
Jiyun Zhang +5 more
wiley +1 more source
Advanced Intelligent Discovery, EarlyView.This work establishes a correlation between solvent properties and the charge transport performance of solution‐processed organic thin films through interpretable machine learning. Strong dispersion interactions (δD), moderate hydrogen bonding (δH), closely matching and compatible with the solute (quadruple thiophene), and a small molar volume (MolVol)
Tianhao Tan, Lian Duan, Dong Wang
wiley +1 more source
A Conformally Invariant Holographic Two-Point Function on the Berger Sphere
, 2004 We apply our previous work on Green's functions for the four-dimensional quaternionic Taub-NUT manifold to obtain a scalar two-point function on the homogeneously squashed three-sphere (otherwise known as the Berger sphere), which lies at its conformal ...
A. Chamblin +88 more
core +3 more sources