Biomedical subjects

Akikazu Hashimoto

Publications and source records attributed to Akikazu Hashimoto.

2 recordsLinked to original sources

PubMed2003

Black holes in Gödel universes and pp waves.

We find exact solutions for rotating and nonrotating neutral black holes in the Gödel universe of five-dimensional minimal supergravity theory. We also describe the embedding of this solution in M-theory. After dimensional reduction and T-duality, we obtain a supergravity solution corresponding to placing a black string in a pp-wave background.

Journal Article↗

PubMed2002

Holography and string dynamics in time-dependent backgrounds.

We study the dynamics of D-branes in a smooth time-dependent background. The theory on the branes is a time-dependent noncommutative field theory. We find the metric and fluxes that determine the dual holographic closed string theory. This provides a concrete example of holography in a cosmological setting.

Journal Article↗