3 citations · 3 across the 4 of their papers we have counts for
5 papers
General formalism, classification, and demystification of the current warp-drive spacetimes
Hamed Barzegar, Thomas Buchert, Quentin Vigneron
We critically examine proposals for the so-called warp-drive spacetimes and classify these models based on their various restrictions within the framework of General Relativity. We…
Bianchi cosmologies in a Thurston-based theory of gravity
Quentin Vigneron, Hamed Barzegar
The strong interplay between Bianchi--Kantowski--Sachs (BKS) spacetimes and Thurston geometries motivates the exploration of the role of topology in our understanding of gravity. A…
Affine connections for Galilean and Carrollian structures: a unified perspective
Quentin Vigneron, Hamed Barzegar, James Read
We develop a classification of general Carrollian structures, permitting affine connections with both torsion and non-metricity. We compare with a recent classification of general…
On restrictions of current warp drive spacetimes and immediate possibilities of improvement
Hamed Barzegar, Thomas Buchert
Looking at current proposals of so-called `warp drive spacetimes', they appear to employ General Relativity only at an elementary level. A number of strong restrictions are imposed…
On elastic deformations of cylindrical bodies under the influence of the gravitational field
Hamed Barzegar, Piotr T. Chruściel, Florian Steininger
We analyse the deformations of a cylindrical elastic body resulting from displacements in a varying gravitational field.