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Universality in chaos of particle motion near black hole horizon

- K. Hashimoto, Norihiro Tanahashi
- Physics
- 19 October 2016

The motion of a particle near a horizon of a spherically symmetric static black hole is shown to possess a universal Lyapunov exponent of chaos bounded by its surface gravity. To probe the horizon,… Expand

Holographic Baryons : Static Properties and Form Factors from Gauge/String Duality(Nuclear Physics)

- K. Hashimoto, T. Sakai, S. Sugimoto
- Physics
- 19 June 2008

In this paper, we study properties of baryons by using a holographic dual of QCD on the basis of the D4/D8-brane configuration, where baryons are described by a soliton. We first determine the… Expand

Tachyon Condensates, Carrollian Contraction of Lorentz Group, and Fundamental Strings

- G. Gibbons, K. Hashimoto, Piljin Yi
- Physics
- 4 September 2002

We study the rolling tachyon condensate in the presence of a gauge fleld. The generic vacuum admits both a rolling tachyon, _ T, and a uniform electric fleld, ~ E, which together afiect the efiective… Expand

Out-of-time-order correlators in quantum mechanics

- K. Hashimoto, Keiju Murata, R. Yoshii
- Physics
- 28 March 2017

A bstractThe out-of-time-order correlator (OTOC) is considered as a measure of quantum chaos. We formulate how to calculate the OTOC for quantum mechanics with a general Hamiltonian. We demonstrate… Expand

Vacuum instability in electric fields via AdS/CFT: Euler-Heisenberg Lagrangian and Planckian thermalization

- K. Hashimoto, T. Oka
- Physics
- 28 July 2013

A bstractWe analyze vacuum instability of strongly coupled gauge theories in a constant electric field using AdS/CFT correspondence. The model is the $ \mathcal{N}=2 $ 1-flavor supersymmetric large… Expand

Generalized supersymetric boundary state

- K. Hashimoto
- Physics
- 14 September 1999

Following our previous paper (hep-th/9909027), we generalize a supersymmetric boundary state so that arbitrary configuration of the gauge field coupled to the boundary of the worldsheet is… Expand

Evolution from non-Fermi- to Fermi-liquid transport via isovalent doping in BaFe 2 (As 1-x P x ) 2 superconductors

- S. Kasahara, T. Shibauchi,
+9 authors Y. Matsuda - Materials Science, Physics
- 19 May 2010

The normal-state charge transport is studied systematically in high-quality single crystals of ${\text{BaFe}}_{2}{({\text{As}}_{1\ensuremath{-}x}{\text{P}}_{x})}_{2}$… Expand

Islands in Schwarzschild black holes

- K. Hashimoto, Norihiro Iizuka, Y. Matsuo
- Physics
- 1 April 2020

We study the Page curve for asymptotically flat eternal Schwarzschild black holes in four and higher spacetime dimensions. Before the Page time, the entanglement entropy grows linearly in time. After… Expand

Quark mass deformation of holographic massless QCD

- K. Hashimoto, T. Hirayama, Feng-Li Lin, Ho-Ung Yee
- Physics
- 28 March 2008

We propose several quark mass deformations of the holographic model of massless QCD using the D4/D8/-brane configuration proposed by Sakai and Sugimoto. The deformations are based on introducing… Expand

Corrections to D-brane Action and Generalized Boundary State

- K. Hashimoto
- Physics
- 6 September 1999

In this paper, we generalize a boundary state to the one incorporating non-constant gauge field strength as an external background coupled to the boundary of a string worldsheet in bosonic string… Expand

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