16 citations · 18 across the 11 of their papers we have counts for
11 papers
Geometric deformations of symmetric spacetimes with a string cloud
Hiroshi Kozaki, Satsuki Matsuno, Tatsuhiko Koike +2
We establish a deformation framework for highly symmetric solutions to the Einstein equations. In this framework, four-dimensional metrics are constructed from three-dimensional η-…
Three-Dimensional Almost Contact Metric Manifolds Revisited via the Newman-Penrose Formalism
Satsuki Matsuno
This paper applies the Newman-Penrose formalism-a technique primarily used in General Relativity-to the analysis of three-dimensional almost contact metric (ACM) manifolds. We refo…
Anisotropic Einstein universes with a global magetic field and SqK-spinors
Fumihiro Ueno, Satsuki Matsuno
We consider an Einstein-Dirac-Maxwell system with two charged massless spinors coupled with an electromagnetic field, and construct a family of exact solutions to the system. The s…
On Sasakian quasi-Killing spinors in three-dimensions
Satsuki Matsuno, Fumihiro Ueno
A Sasakian quasi-Killing spinor (SqK-spinor), which is a generalization of a Killing spinor on Sasakian manifolds, was defined in \cite{Kim Friedrich 2000}.The purpose of this pape…
The exact solutions to an Einstein-Dirac-Maxwell system with Sasakian quasi-Killing spinors on 4D spacetimes
Satsuki Matsuno, Fumihiro Ueno
Exact solutions to an Einstein-Maxwell(E-D-M) system with an electric current are simple models of global cosmic magnetic phenomena in the universe. In this paper, we consider an E…
Inhomogeneous Generalization of Einstein's Static Universe with Sasakian Space
Hideki Ishihara, Satsuki Matsuno
We construct exact static inhomogeneous solutions to Einstein's equations with counter flow of particle fluid and a positive cosmological constant by using the Sasaki metrics on th…
Godel-type Solutions in Einstein-Maxwell-Scalar Field Theories
Hideki Ishihara, Satsuki Matsuno
We show that one-parameter family of Godel-type metrics are exact solutions in a wide class of Einstein-Maxwell-scalar field theories. In these solutions, the gauge field has a 1-f…
Solutions to the Einstein-Maxwell-Current System with Sasakian maifolds
Hideki Ishihara, Satsuki Matsuno
We construct stationary solutions to the Einstein-Maxwell-current system by using the Sasakian manifold for the three-dimensional space. Both the magnetic field and the electric cu…
Characterization of 3D Sasakian manifold from magnetic Hopf surfaces
Satsuki Matsuno
In a three-dimensional Riemannian manifold M that admits a unit Killing vector field , we regard as a magnetic vector field. A magnetic Hopf surface is a surface obtained by…
Black holes submerged in Anti-de Sitter space
Hideki Ishihara, Satsuki Matsuno, Haruki Nakamura
Suppose a one-dimensional isometry group acts on a space, we can consider a submergion induced by the isometry, namely we obtain an orbit space by identification of points on the o…
Giambelli Identity in Super Chern-Simons Matrix Model
Satsuki Matsuno, Sanefumi Moriyama
A classical identity due to Giambelli in representation theory states that the character in any representation is expressed as a determinant whose components are characters in the…