396 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Kyoto UniversityJP38 papers
- The University of TokyoJP29 papers
- Nagoya UniversityJP26 papers
- Kyushu UniversityJP24 papers
- The University of OsakaJP24 papers
- Tokai UniversityJP24 papers
- Boston UniversityUS23 papers
- California State University, Dominguez HillsUS23 papers
- Chonnam National UniversityKR23 papers
- Duke UniversityUS23 papers
- Gifu UniversityJP23 papers
- Institute for Cosmic Ray ResearchJP23 papers
15 papers · 1 filter
Path optimization method with use of neural network for the sign problem in field theories
Akira Ohnishi, Yuto Mori, Kouji Kashiwa
We investigate the sign problem in field theories by using the path optimization method with use of the neural network. For theories with the sign problem, integral in the complexi…
Phase transition encoded in neural network
Kouji Kashiwa, Yuta Kikuchi, Akio Tomiya
We discuss an aspect of neural networks for the purpose of phase transition detection. To this end, we first train the neural network by feeding Ising/Potts configurations with lab…
The global study of Riemannian-Finsler geometry
Katsuhiro Shiohama, Bankteshwar Tiwari
The aim of this article is to present a comparative review of Riemannian and Finsler geometry. The structures of cut and conjugate loci on Riemannian manifolds have been discussed…
Teaching electromagnetism through demonstration of a practical application involving learning content from multiple disciplines
Jiro Kitagawa
Teaching electromagnetism by demonstrating a practical application associated with learning content is an important teaching technique. Demonstrations are often performed through v…
Persistent homology analysis of deconfinement transition in effective Polyakov-line model
Takehiro Hirakida, Kouji Kashiwa, Junpei Sugano +3
The persistent homology analysis is applied to the effective Polyakov-line model on a rectangular lattice to investigate the confinement-deconfinement nature. The lattice data are…
Superconductivity in oxygen-added Zr5Pt3
Shusuke Hamamoto, Jiro Kitagawa
Mn5Si3-type structure has been offering an interstitial chemistry. Recent report of enhancement of superconductivity in a Nb-based Mn5Si3-type compound by addition of an interstiti…
Fractionally quantized Berry phases of magnetization plateaux in spin- Heisenberg multimer chains
Isao Maruyama, Shin Miyahara
We study the fractionally quantized Berry phase, , to characterize local -mer spin structures at magnetization pl…
New room-temperature ferromagnet: B-added Pd0.75Mn0.25 alloy
Jiro Kitagawa, Kohei Sakaguchi
Mn-based room-temperature ferromagnets attract considerable attention due to their high ordered Mn moment. We have found that a Pd0.75Mn0.25 alloy with added B (Pd0.75Mn0.25Bx) sho…
Deriving the Variance of the Discrete Fourier Transform Test Using Parseval's Theorem
Atsushi Iwasaki
The discrete Fourier transform test is a randomness test included in NIST SP800-22. However, the variance of the test statistic is smaller than expected and the theoretical value o…
Power law observed in the motion of an asymmetric camphor boat under viscous conditions
Michiko Shimokawa, Masashi Oho, Kengo Tokuda +1
We investigated the velocity of an asymmetric camphor boat moving on aqueous solutions with glycerol. The viscosity was controlled by using several concentrations of glycerol into…
Asymptotic profile of solutions for strongly damped Klein-Gordon equations
Ryo Ikehata
We consider the Cauchy problem in the whole space for strongly damped Klein-Gordon equations. We derive asymptotic profles of solutions with weighted initial data by a simple metho…
Control the model sign problem via path optimization method: Monte-Carlo approach to QCD effective model with Polyakov loop
Kouji Kashiwa, Yuto Mori, Akira Ohnishi
We apply the path optimization method to a QCD effective model with the Polyakov loop at finite density to circumvent the model sign problem. The Polyakov-loop extended Nambu--Jona…
Search for Neutrinos in Super-Kamiokande associated with the GW170817 neutron-star merger
K. Abe, C. Bronner, Y. Hayato +160
We report the results of a neutrino search in Super-Kamiokande for coincident signals with the first detected gravitational wave produced by a binary neutron star merger, GW170817,…
Anomalous Hall effect in dense QCD matter
Toshitaka Tatsumi, Ryo Yoshiike, Kouji Kashiwa
In this letter, we investigate the anomalous Hall effect in dense QCD matter. When the dual chiral density wave which is the spatially modulated chiral condensate appears in the me…
Hill plot focusing on Ce compounds with high magnetic-ordering-temperatures and consequent study of Ce2AuP3
Junya Miyahara, Naoki Shirakawa, Yuta Setoguchi +3
Hill plot is a well-known criterion of the f-electron element interatomic threshold-distance separating the nonmagnetic state from the magnetic one in actinides or lanthanides. We…