Results 11 to 20 of about 473,950 (309)

Einstein Manifolds As Yang-Mills Instantons [PDF]

open access: yesModern Physics Letters A, 2013
It is well-known that Einstein gravity can be formulated as a gauge theory of Lorentz group where spin connections play a role of gauge fields and Riemann curvature tensors correspond to their field strengths.
Donaldson S. K.   +6 more
core   +2 more sources

Anatomy of Einstein manifolds [PDF]

open access: yesPhysical Review D, 2022
v2: Title changed with improved contents, 36 pages, 4 figures, to appear in Phys.
Jongmin Park   +2 more
openaire   +2 more sources

Einstein manifolds with skew torsion [PDF]

open access: greenThe Quarterly Journal of Mathematics, 2012
24 pages, 1 figure, new version with erratum added at the ...
Ilka Agricola, Ana Cristina Ferreira
openalex   +5 more sources

The $\eta$-Einstein condition on indefinite s-manifolds [PDF]

open access: greenMathematica Slovaca, 2012
Abstract An η-Einstein condition is introduced in the context of indefinite globally framed f-manifolds, and several Schur-type results for indefinite S-manifolds are proved.
Letizia Brunetti
openalex   +3 more sources

Local and global scalar curvature rigidity of Einstein manifolds [PDF]

open access: yesMathematische Annalen, 2021
An Einstein manifold is called scalar curvature rigid if there are no compactly supported volume-preserving deformations of the metric which increase the scalar curvature.
Mattias Dahl, Klaus Kroencke
semanticscholar   +1 more source

∗-Ricci Tensor on α-Cosymplectic Manifolds

open access: yesAdvances in Mathematical Physics, 2022
In this paper, we study α-cosymplectic manifold M admitting ∗-Ricci tensor. First, it is shown that a ∗-Ricci semisymmetric manifold M is ∗-Ricci flat and a ϕ-conformally flat manifold M is an η-Einstein manifold. Furthermore, the ∗-Weyl curvature tensor
M. R. Amruthalakshmi   +3 more
doaj   +1 more source

Bose–Einstein condensation on curved manifolds [PDF]

open access: yesNew Journal of Physics, 2020
Here we describe a weakly interacting Bose gas on a curved smooth manifold, which is embedded in the three-dimensional Euclidean space. To this end we start by considering a harmonic trap in the normal direction of the manifold, which confines the three ...
N. S. Móller   +5 more
semanticscholar   +1 more source

ρ-Einstein Solitons on Warped Product Manifolds and Applications

open access: yesJournal of Mathematics, 2022
The purpose of this research is to investigate how a ρ-Einstein soliton structure on a warped product manifold affects its base and fiber factor manifolds. Firstly, the pertinent properties of ρ-Einstein solitons are provided.
Nasser Bin Turki   +4 more
doaj   +1 more source

(k,μ)-Paracontact Manifolds and Their Curvature Classification

open access: yesCumhuriyet Science Journal, 2022
The aim of this paper is to study (k,μ)-Paracontact metric manifold. We introduce the curvature tensors of a (k,μ)-paracontact metric manifold satisfying the conditions R⋅P_*=0, R⋅L=0, R⋅W_1=0, R⋅W_0=0 and R⋅M=0.
Pakize Uygun
doaj   +1 more source

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