Results 91 to 100 of about 587 (217)

Mass-deformed M2 branes in Stenzel space

open access: yesJournal of High Energy Physics, 2017
We obtain finite-temperature M2 black branes in 11-dimensional supergravity, in a G 4-flux background whose self-dual part approaches a solution of Cvetič, Gibbons, Lü, and Pope, based upon Stenzel’s family of Ricci-flat Kähler deformed cones.
Óscar J. C. Dias   +3 more
doaj   +1 more source

Multiscale Differential Geometry Learning for Protein Flexibility Analysis

open access: yesJournal of Computational Chemistry, Volume 46, Issue 7, March 15, 2025.
Protein structure fluctuations, as measured by B‐factors, are closely linked to protein flexibility and function. Predicting B‐factors is an important research topic that has led to the development of various predictive models. Atomic interactions within proteins can be described using a family of low‐dimensional manifolds.
Hongsong Feng   +2 more
wiley   +1 more source

Geometric Machine Learning

open access: yesAI Magazine, Volume 46, Issue 1, Spring 2025.
Abstract A cornerstone of machine learning is the identification and exploitation of structure in high‐dimensional data. While classical approaches assume that data lies in a high‐dimensional Euclidean space, geometric machine learning methods are designed for non‐Euclidean data, including graphs, strings, and matrices, or data characterized by ...
Melanie Weber
wiley   +1 more source

Methods of holonomy theory for Ricci-flat Riemannian manifolds [PDF]

open access: yesJournal of Mathematical Physics, 1991
Compact, Ricci-flat Riemannian manifolds often arise in physical applications, either as a technical device or as models of ‘‘internal’’ space. The idea of extending the holonomy group of such a manifold to a larger gauge group (‘‘embedding the connection in the gauge group’’) plays a fundamental role in the ‘‘manifold compactification’’ approach to ...
openaire   +2 more sources

An attempt to geometrize electromagnetism

open access: yesOpen Physics, 2018
This study investigates the curved worldline of a charged particle accelerated by an electromagnetic field in flat spacetime. A new metric, which dependes on the charge-to-mass ratio and electromagnetic potential, is proposed to describe the curve ...
Huang XiuLin, Xu Yan, Liu ChengZhi
doaj   +1 more source

On LP-Kenmotsu Manifold with Regard to Generalized Symmetric Metric Connection of Type (α, β)

open access: yesMathematics
In the current article, we examine Lorentzian para-Kenmotsu (shortly, LP-Kenmotsu) manifolds with regard to the generalized symmetric metric connection ∇G of type (α,β).
Doddabhadrappla Gowda Prakasha   +3 more
doaj   +1 more source

Unitarization from geometry

open access: yesJournal of High Energy Physics, 2019
We study the perturbative unitarity of scattering amplitudes in general dimensional reductions of Yang-Mills theories and general relativity on closed internal manifolds.
James Bonifacio, Kurt Hinterbichler
doaj   +1 more source

Abstracts

open access: yesMolecular Oncology, Volume 19, Issue S1, Page 1-895, June 2025.
Abstracts submitted to the ‘EACR 2025 Congress: Innovative Cancer Science’, from 16–19 June 2025 and accepted by the Congress Organising Committee are published in this Supplement of Molecular Oncology, an affiliated journal of the European Association for Cancer Research (EACR).
wiley   +1 more source

Kaluza-Klein Multidimensional Models with Ricci-Flat Internal Spaces: The Absence of the KK Particles

open access: yesAdvances in High Energy Physics, 2013
We consider a multidimensional Kaluza-Klein (KK) model with a Ricci-flat internal space, for example, a Calabi-Yau manifold. We perturb this background metrics by a system of gravitating masses, for example, astrophysical objects such as our Sun.
Alexey Chopovsky   +2 more
doaj   +1 more source

Complete Ricci-flat K�hler manifolds of infinite topological type

open access: yesCommunications in Mathematical Physics, 1989
We display an infinite dimensional family of complete Ricci-flat Kahler manifolds of complex dimension 2, for which the second homology is infinitely generated. These are obtained from the Gibbons-Hawking Ansatz [2] by using infinitely many, sparsely distributed centers.
Claude LeBrun   +3 more
openaire   +3 more sources

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