199 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- National Institute of TechnologyJP6 papers
- Kyoto UniversityJP4 papers
- Bar-Ilan UniversityIL3 papers
- Boston UniversityUS3 papers
- National Institute of Technology, Kagoshima CollegeJP3 papers
- Rikkyo UniversityJP3 papers
- University of HyogoJP3 papers
- Australian National UniversityAU2 papers
- Daiichi Institute of TechnologyJP2 papers
- Hyogo University of Health SciencesJP2 papers
- Kogakuin UniversityJP2 papers
- Middle Tennessee State UniversityUS2 papers
24 papers
Magnetised CGM Gas at z~1 revealed by SPICE-RACS
Sunil Malik, S. P. O'Sullivan, A. J. M. Thomson +17
Magnetic fields are expected to permeate the circumgalactic medium (CGM) of galaxies, yet direct constraints at high redshift remain limited by the lack of high-quality Faraday rot…
The PPP-completeness of the Ward-Szabo theorem
Takashi Ishizuka
Ward and Szabó [WS94] have shown that a complete graph with nodes whose edges are colored by colors and that has at least two colors contains a bichromatic triangle. This…
Amplification and saturation of turbulent magnetic field in collapsing primordial gas clouds
Sho Higashi, Hajime Susa, Christoph Federrath +1
Recent numerical studies suggest that magnetic fields play an important role in primordial star formation in the early universe. However, the detailed evolution of the magnetic fie…
Black hole ringdown from physically sensible initial value problem in higher-order scalar-tensor theories
Keisuke Nakashi, Masashi Kimura, Hayato Motohashi +1
We study odd-parity perturbations about static and spherically symmetric black hole solutions with a linearly time-dependent scalar field in higher-order scalar-tensor theories. In…
Optimal scheduling in probabilistic imaginary-time evolution on a quantum computer
Hirofumi Nishi, Koki Hamada, Yusuke Nishiya +2
Ground-state preparation is an important task in quantum computation. The probabilistic imaginary-time evolution (PITE) method is a promising candidate for preparing the ground sta…
Black hole perturbations in higher-order scalar-tensor theories: initial value problem and dynamical stability
Keisuke Nakashi, Masashi Kimura, Hayato Motohashi +1
We propose a physically sensible formulation of initial value problem for black hole perturbations in higher-order scalar-tensor theories. As a first application, we study monopole…
Gate tuning of fractional quantum Hall states in InAs two-dimensional electron gas
S. Komatsu, H. Irie, T. Akiho +3
We report the observation of fractional quantum Hall (FQH) effects in a two-dimensional electron gas (2DEG) confined to an InAs/AlGaSb quantum well, using a dual-gated Hall-bar dev…
Revisiting timelike geodesics in the Fisher-Janis-Newman-Winicour-Wyman spacetime
Keisuke Ota, Shinpei Kobayashi, Keisuke Nakashi
We investigate the timelike geodesics and the periapsis precession of orbits in the Fisher-Janis-Newman-Winicour-Wyman spacetime. This spacetime represents the naked singularity sp…
Transients from Initial Conditions Based on Lagrangian Perturbation Theory in -body Simulations III: The Case of GADGET-2 Code
Takayuki Tatekawa
In modern cosmology, the precision of the theoretical prediction is increasingly required. In cosmological -body simulations, the effect of higher-order Lagrangian perturbation…
Accelerating -body simulation of self-gravitating systems with limited first-order post-Newtonian approximation
Takayuki Tatekawa
In this study, an -body simulation code was developed for self-gravitating systems with a limited first-order post-Newtonian approximation. The code was applied to a special cas…
Beaming structures of Jupiter's decametric common S-bursts observed from LWA1, NDA, and URAN2 radio telescopes
Masafumi Imai, Alain Lecacheux, Tracy E. Clarke +7
On 2015 February 21, simultaneous observations of Jupiter's decametric radio emission between 10 and 33 MHz were carried out using three powerful low-frequency radio telescopes: Lo…
Robustness analysis of bimodal networks in the whole range of degree correlation
Shogo Mizutaka, Toshihiro Tanizawa
We present exact analysis of the physical properties of bimodal networks specified by the two peak degree distribution fully incorporating the degree-degree correlation between nod…
Probing Jovian Decametric Emission with the Long Wavelength Array Station 1
T. E. Clarke, C. A. Higgins, Jinhie Skarda +12
New observations of Jupiter's decametric radio emissions have been made with the Long Wavelength Array Station 1 (LWA1) which is capable of making high quality observations as low…
On possible origins of trends in financial market price changes
Ryo Murakami, Tomomichi Nakamura, Shin Kimura +2
We investigate possible origins of trends using a deterministic threshold model, where we refer to long-term variabilities of price changes (price movements) in financial markets a…
Constructing directed networks from multivariate time series using linear modelling technique
Toshihiro Tanizawa, Tomomichi Nakamura, Fumihiko Taya +1
We describe a method to construct directed networks from multivariate time series which has several advantages over the widely accepted methods. This method is based on an informat…
Robustness of cooperation on scale-free networks under continuous topological change
Genki Ichinose, Yuto Tenguishi, Toshihiro Tanizawa
In this paper, we numerically investigate the robustness of cooperation clusters in prisoner's dilemma played on scale-free networks, where the network topologies change by continu…
Structural robustness and transport efficiency of complex networks with degree correlation
Toshihiro Tanizawa
We examine two properties of complex networks, the robustness against targeted node removal (attack) and the transport efficiency in terms of degree correlation in node connection…
Networks with time structure from time series
Tomomichi Nakamura, Toshihiro Tanizawa
We propose a method of constructing a network, in which its time structure is directly incorporated, based on a deterministic model from a time series. To construct such a network,…
Robustness of onion-like correlated networks against targeted attacks
Toshihiro Tanizawa, Shlomo Havlin, H. Eugene Stanley
Recently, it was found by Schneider et al. [Proc. Natl. Acad. Sci. USA, 108, 3838 (2011)], using simulations, that scale-free networks with "onion structure" are very robust agains…
Parametric instabilities of large-amplitude parallel propagating Alfven waves: 2-D PIC simulation
Yasuhiro Nariyuki, Shuichi Matsukiyo, Tohru Hada
We discuss the parametric instabilities of large-amplitude parallel propagating Alfven waves using the 2-D PIC simulation code. First, we confirmed the results in the past study [S…
Symmetry Classes of Spin and Orbital Ordered States in a t_{2g} Hubbard Model on a Two-dimensional Square Lattice
Masanori Hamada, Akira Nakanishi, Akira Goto +1
This paper presents symmetry classes of the Hartree-Fock (HF) solutions of spin and orbital ordered states in a t_{2g} Hubbard model on a two-dimensional square lattice. Using a gr…
Optimization of Network Robustness to Waves of Targeted and Random Attack
T. Tanizawa, G. Paul, R. Cohen +2
We study the robustness of complex networks to multiple waves of simultaneous (i) targeted attacks in which the highest degree nodes are removed and (ii) random attacks (or failure…
Optimization of Robustness of Complex Networks
G. Paul, T. Tanizawa, S. Havlin +1
Networks with a given degree distribution may be very resilient to one type of failure or attack but not to another. The goal of this work is to determine network design guidelines…
On Local Symmetric Order Parameters of Vortex Lattice States
Masa-aki Ozaki, Yoshiki Hori, Akira Goto
This paper gives a new refined definition of local symmetric order parameters (OPs)(s-wave, d-wave and p-wave order parameters) of vortex lattice states for singlet superconductivi…