2 papers
gr-qc2021
Static cosmological solutions in quadratic gravity
Daniel Muller, Alexey Toporensky
We consider conditions for existence and stability of a static cosmological solution in quadratic gravity. It appears that such a solution for a Universe filled by only one type of…
physics.class-ph2020
The divergence and curl in arbitrary basis
Waleska P. F. de Medeiros, Rodrigo R. de Lima, Vanessa C. de Andrade +1
In this work, the divergence and curl operators are obtained using the coordinate free non rigid basis formulation of differential geometry. Although the authors have attempted to…