346 citations · 2.1k across the 48 of their papers we have counts for
49 papers
Emergence of Kastor-Traschen spacetime from a nonlinear Dirac system
Daisuke Ida
We establish a uniqueness theorem in four-dimensional spacetime, demonstrating that a nonlinear spinor system naturally constrains the background geometry to the Kastor-Traschen sp…
The international forward guidance transmission under a global liquidity trap
Daisuke Ida, Hirokuni Iiboshi
This paper quantitatively explores the interaction effect of forward guidance (FG) on international monetary policy transmission using a standard two-country new Keynesian model wi…
Complete Integrability of Cohomogeneity-one strings in and Canonical Form of Killing Vector Algebra
Daisuke Ida
The equation of motion for comohogeneity-one Nambu-Goto strings in flat space has been investigated. We first classify possible forms of the Killing vector field…
Note on orbit space of G membranes
Mitsuharu Hasegawa, Daisuke Ida
The motion of test membranes on which the group of isometries of a spacetime acts has been considered in general settings. It has been shown that the configuration of Nambu…
Instability of stationary closed strings winding around flat torus in five-dimensional Schwarzschild spacetimes
Mitsuharu Hasegawa, Daisuke Ida
Linear perturbations for a one parameter family of stationary, closed Nambu-Goto strings winding around a flat torus in the five-dimensional Schwarzschild spacetime have been studi…
Upper Bound for Diameter of Cosmological Black Holes and Nonexistence of Black Strings
Daisuke Ida
The diameter of the apparent horizon, defined by the distance between furthest points on the horizon, in spacetimes with a positive cosmological constant has been inve…