9 papers
Polytropic wormholes
Remo Garattini, Emmanuel N. Saridakis, Athanasios G. Tzikas
Traversable wormholes in general relativity require non-standard matter sources, making the identification of physically motivated equations of state particularly important. We inv…
Warp Drive in a De Sitter Universe
Remo Garattini, Kirill Zatrimaylov
Generalizing the result of H. Ellis who embedded a warp bubble in the background of a black hole, we introduce a warp bubble in a de Sitter universe. We show that under certain con…
Short-range approximation to Casimir wormholes inspired by scalar and electric fields
Remo Garattini, Athanasios G. Tzikas
We investigate a static traversable wormhole sustained by a combination of a minimally coupled scalar field and an electric field, with exotic matter sourced by Casimir energy. Con…
Charged rotating Casimir wormholes
Remo Garattini, Athanasios G. Tzikas
We investigate the conditions under which a rotating traversable wormhole can be supported by a Casimir source in the presence of an external electric field. Extending previous stu…
Traversable Wormholes induced by polytropic energy density
Remo Garattini, Francisco S. N. Lobo, Kirill Zatrimaylov
We investigate spherically symmetric and static traversable wormholes supported by exotic matter, focusing on solutions sourced by physically motivated dark matter energy density p…
Rotating Casimir Wormholes
Remo Garattini, Athanasios G. Tzikas
A Casimir Wormhole is a Traversable Wormhole powered by a Casimir energy source within a static reference frame. A natural extension of this system is the inclusion of rotation. We…