100 citations · 424 across the 24 of their papers we have counts for
7 papers · 1 filter
NUT wormholes
Gérard Clément, Dmitri Gal'tsov, Mourad Guenouche
We show that supercritically charged black holes with NUT provide a new setting for traversable wormholes. This does not require exotic matter, a price being the Misner string sing…
Rehabilitating space-times with NUTs
Gérard Clément, Dmitri Gal'tsov, Mourad Guenouche
We revisit the Taub-NUT solution of the Einstein equations without time periodicity condition, showing that the Misner string is still fully transparent for geodesics. In this case…
Quantized rotating Taub-bolt instantons
Gérard Clément, Dmitri Gal'tsov
We argue that previously suggested metrics for rotating Taub-bolt instantons do not satisfy all the necessary regularity conditions, and we present a family of new regular rotating…
Bertotti-Robinson and soliton string solutions of minimal supergravity
Adel Bouchareb, Chiang-Mei Chen, Gérard Clément +1
We report on a series of new solutions to five-dimensional minimal supergravity. Our method applies to space-times with two commuting Killing symmetries and consists in combining d…
Oxidation of D=3 cosets and Bonnor dualities in
Gérard Clément, Dmitri V. Gal'tsov
Bonnor's map in General Relativity is duality between (dimensionally reduced) vacuum gravity and static truncation of electro-vacuum theory. It was used as a tool to generate an ex…
All extremal instantons in Einstein-Maxwell-dilaton-axion theory
Mustapha Azreg-Aïnou, Gérard Clément, Dmitri V. Gal'tsov
We construct explicitly all extremal instanton solutions to supergravity truncated to one vector field (Einstein-Maxwell-dilaton-axion (EMDA) theory). These…