Results 141 to 150 of about 298,518 (247)

Minimal submanifolds with finite total scalar curvature [PDF]

, 1996
Helen Moore
openalex   +1 more source

Kinetic scalar curvature extended f(R) gravity

Nuclear Physics B, 2018
In this work we study a modified version of vacuum f(R) gravity with a kinetic term which consists of the first derivatives of the Ricci scalar. We develop the general formalism of this kinetic Ricci modified f(R) gravity and we emphasize on cosmological
S.V. Chervon, A.V. Nikolaev, T.I. Mayorova, S.D. Odintsov, V.K. Oikonomou   +4 more
doaj  

Deformations of the scalar curvature of a partially integrable pseudohermitian manifold [PDF]

arXiv
We consider deformations of the scalar curvature of a partially integrable pseudohermitian manifold, in analogy with the work of Fischer and Marsden on Riemannian manifolds. In particular, we introduce and discuss $R$-singular spaces, give sufficient conditions for the stability of the scalar curvature, and give a partial infinitesimal rigidity result ...
arxiv  

Super-energy tensor for space–times with vanishing scalar curvature [PDF]

, 1999
Miguel Á. G. Bonilla, Carlos F. Sopuerta   +1 more
openalex   +1 more source

Complete manifolds with nonnegative scalar curvature and the positive action conjecture in general relativity

, 1979
Richard Schoen, Shing‐Tung Yau
openalex   +1 more source

Sufficient conditions for curvature invariants to avoid divergences in hyperextended scalar-tensor theory for Bianchi models [PDF]

, 2000
Stéphane Fay
openalex   +1 more source

Solutions of the Einstein–Dirac equation on Riemannian 3-manifolds with constant scalar curvature [PDF]

, 2000
Thomas Friedrich
openalex   +1 more source

Fully viable DHOST bounce with extra scalar

Journal of High Energy Physics
In this paper we construct a class of Degenerate Higher-Order Scalar-Tensor (DHOST) theories with an extra scalar field, which admits viable solutions of bouncing universe satisfying the following requirements: (i) absence of Belinski-Khalatnikov ...
Ok Song An, Jin U Kang, Yong Jin Kim, Ui Ri Mun, Un Gyong Ri   +4 more
doaj   +1 more source

On the existence of solutions of prescribing scalar curvature problem [PDF]

, 2000
Li Ma
openalex   +1 more source

Rigidity of area minimizing tori in 3-manifolds of nonnegative scalar curvature [PDF]

, 2000
Mingliang Cai, Gregory J. Galloway
openalex   +1 more source