Solving the curvature and Hubble parameter inconsistencies through structure formation-induced curvature

Curvature collineations on Lie algebroid structure

Considering prolongation of a Lie algebroid equipped with a spray, defining some classical tensors, we show that a Lie symmetry of a spray is a curvature collineation for these tensors.

The Research on the Biggest Borehole Curvature that Allowed through for the Rotating Casing (RESEARCH NOTE)

With the development of highly-deviated well cementing techniques, rotating casing cementing technology has got more and more attention. The rotating casing technique can improve the displacement efficiency of cement paste, and then enhance the quality of well cementation. In the stuck section, the rotating casing can redress the well to make the casing run sequentially. The casing endures shea...

Landsberg Curvature, S-curvature and Riemann Curvature

Berry curvature and energy bands of graphene

In this paper energy bands and Berry curvature of graphene was studied. Desired Hamiltonian regarding the next-nearest neighbors obtained by tight binding model. By using the second quantization approach, the transformation matrix is calculated and the Hamiltonian of system is diagonalized. With this Hamiltonian, the band structure and wave function can be calculated. By using calculated wave f...

Curvature Structure and General Relativity

Newtonian gravitational theory essentially assumes the ability to distinguish between “true” forces and those “accelerative” forces which arise for an observer who “accelerates with respect to absolute space”. Leaving aside the philosophical (and other) problems involved here, it is assumed from this that a preferred family of reference frames (observers), called inertial, exist in which accele...