Results 101 to 110 of about 587 (217)
Conformally Flat Manifolds and a Pinching Problem on the Ricci Tensor [PDF]
, 1976 Samuel I. Goldberg, Mitsutaka Okumura
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On M-theory fourfold vacua with higher curvature terms
Physics Letters B, 2015 We study solutions to the eleven-dimensional supergravity action, including terms quartic and cubic in the Riemann curvature, that admit an eight-dimensional compact space.
Thomas W. Grimm +2 more
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The quantum non-linear σ-model RG flow and integrability in wormhole geometries
Nuclear Physics B, 2023 The target space of the non-linear σ-model is a Riemannian manifold. Although it can be any Riemannian metric, there are certain physically interesting geometries which are worth to study.
Oscar Lasso Andino +1 more
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Learning group invariant Calabi–Yau metrics by fundamental domain projections
Machine Learning: Science and TechnologyWe present new invariant machine learning models that approximate the Ricci-flat metric on Calabi–Yau (CY) manifolds with discrete symmetries. We accomplish this by combining state of the art models for predicting such metrics, based on the so-called φ ...
Yacoub Hendi +2 more
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A Ricci flat pseudo-Riemannian metric on the tangent bundle of a Riemannian manifold [PDF]
, 2001 Neculai Papaghiuc
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Mathematica Moravica, 2014 The object of the present paper is to study a special type of spacetime. It is proved that in a conformally flat (W RS)4 spacetime with non-zero scalar curvature the vector field p defined by ɡ(X, p) = E(X) is irrotational and the integral curves of the ...
Mallick Sahanous, Chand De Uday
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Essential constants for spatially homogeneous Ricci-flat manifolds of dimension 4+1 [PDF]
, 2004 T. Christodoulakis +2 more
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Generalized teleparallel de Sitter geometries. [PDF]
Eur Phys J C Part Fields, 2023 Coley AA +3 more
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The Ricci curvature of half-flat manifolds [PDF]
, 2007 Tibra Ali, Gerald Cleaver
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