4 papers
Quasilocal inequalities for attractive gravity probe surface
Tetsuya Shiromizu, Keisuke Izumi, Hirotaka Yoshino +1
We discuss the local and quasilocal properties of the loosely trapped surface (LTS) and the attractive gravity probe surface (AGPS), which have been proposed to characterize the st…
Attractive gravity probe surface in Einstein-Maxwell system
Kangjae Lee, Keisuke Izumi, Tetsuya Shiromizu +2
We derive areal inequalities for five types of attractive gravity probe surfaces, which were proposed by us in order to characterize the strength of gravity in different ways inclu…
Loosely trapped surface for slowly rotating black hole
Keisuke Izumi, Tetsuya Shiromizu, Daisuke Yoshida +2
We construct the marginal loosely trapped surface (marginal LTS) for the Kerr spacetime with a small Kerr parameter perturbatively, where the LTS condition is saturated. An LTS is…
Generalisation of Conformal-Disformal Transformations of the Metric in Scalar-Tensor Theories
Eugeny Babichev, Keisuke Izumi, Karim Noui +2
We study new classes of metric transformations in the context of scalar-tensor theories, which involve both higher derivatives of the scalar field and derivatives of the metric its…