975 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- The University of TokyoJP429 papers
- Kyoto UniversityJP151 papers
- RIKENJP142 papers
- Tokyo Institute of TechnologyJP134 papers
- High Energy Accelerator Research OrganizationJP100 papers
- Tohoku UniversityJP100 papers
- Nagoya UniversityJP97 papers
- The University of OsakaJP96 papers
- Tokyo University of ScienceJP90 papers
- Japan Science and Technology AgencyJP68 papers
- UNSW SydneyAU63 papers
- Centre National de la Recherche ScientifiqueFR62 papers
91 papers · 1 filter
Generalized Lyapunov exponent as a unified characterization of dynamical instabilities
Takuma Akimoto, Masaki Nakagawa, Soya Shinkai +1
The Lyapunov exponent characterizes an exponential growth rate of the difference of nearby orbits. A positive Lyapunov exponent is a manifestation of chaos. Here, we propose the Ly…
Transition from distributional to ergodic behavior in an inhomogeneous diffusion process: Method revealing an unknown surface diffusivity
Takuma Akimoto, Kazuhiko Seki
Diffusion of molecules in cells plays an important role in providing a biological reaction on the surface by finding a target on the membrane surface. The water retardation (slow d…
Meson turbulence at quark deconfinement from AdS/CFT
Koji Hashimoto, Shunichiro Kinoshita, Keiju Murata +1
Based on the QCD string picture at confining phase, we conjecture that the deconfinement transition always accompanies a condensation of higher meson resonances with a power-law be…
Neutral bions in the CP^{N-1} model for resurgence
Tatsuhiro Misumi, Muneto Nitta, Norisuke Sakai
Classical configurations in the CP^{N-1} model on R^1 x S^1 is studied with twisted boundary conditions. Starting from fractional instantons with the Z_N twisted boundary condition…
Non-Abelian Sine-Gordon Solitons
Muneto Nitta
We point out that non-Abelian sine-Gordon solitons stably exist in the chiral Lagrangian. They also exist in a gauge theory with two by complex scalar fields…
Fractional instantons and bions in the O(N) model with twisted boundary conditions
Muneto Nitta
Recently, multiple fractional instanton configurations with zero instanton charge, called bions, have been revealed to play important roles in quantum field theories on compactifie…
Undulation Amplitude of a Fluid Membrane Surrounded by Near-Critical Binary Fluid Mixtures
Youhei Fujitani
We consider the thermal undulation, or shape fluctuation, of an almost planar fluid membrane surrounded by the same near-critical binary fluid mixtures on both sides. A weak prefer…
D-brane solitons in various dimensions
Sven Bjarke Gudnason, Muneto Nitta
We construct a D-brane soliton, a composite topological soliton sharing some properties with a D-brane, in a Skyrme model in 4+1 dimensions, in which Skyrmions are strings ending o…
Recurrence of the Brownian motion in multidimensional semi-selfsimilar environments and Gaussian environments
Seiichiro Kusuoka, Hiroshi Takahashi, Yozo Tamura
Asymptotic behavior of the one-dimensional Brownian motion in general random environments has been investigated by many researchers. However, many of the methods used in the argume…
A Two Qubit Logic Gate in Silicon
M. Veldhorst, C. H. Yang, J. C. C. Hwang +9
Quantum computation requires qubits that can be coupled and realized in a scalable manner, together with universal and high-fidelity one- and two-qubit logic gates \cite{DiVincenzo…
Fluctuation Analysis of Time-Averaged Mean-Square Displacement for Langevin Equation with Time-Dependent and Fluctuating Diffusivity
Takashi Uneyama, Tomoshige Miyaguchi, Takuma Akimoto
The mean-square displacement (MSD) is widely utilized to study the dynamical properties of stochastic processes. The time-averaged MSD (TAMSD) provides some information on the dyna…
Electronic structure and transport properties of Cu-deficient kuramite Cu3-xSnS4
Yosuke Goto, Yuki Sakai, Yoichi Kamihara +1
Electrical and thermal transport properties of Cu-deficient kuramite Cu3-xSnS4 (CTS) was examined as a possible earth-abundant thermoelectric material. Crystallographic structure o…
Exact Results in Discretized Gauge Theories
So Matsuura, Tatsuhiro Misumi, Kazutoshi Ohta
We apply the localization technique to topologically twisted N=(2,2) supersymmetric gauge theory on a discretized Riemann surface (the generalized Sugino model). We exactly evaluat…
Microscopic Model Calculations for the Magnetization Process of Layered Triangular-Lattice Quantum Antiferromagnets
Daisuke Yamamoto, Giacomo Marmorini, Ippei Danshita
Magnetization processes of spin-1/2 layered triangular-lattice antiferromagnets (TLAFs) under a magnetic field H are studied by means of a numerical cluster mean-field method with…
A computational framework for bioimaging simulation
Masaki Watabe, Satya N. V. Arjunan, Seiya Fukushima +6
Using bioimaging technology, biologists have attempted to identify and document analytical interpretations that underlie biological phenomena in biological cells. Theoretical biolo…
Dense Molecular Clumps associated with the LMC Supergiant Shells LMC 4 \& LMC 5
Kosuke Fujii, Tetsuhiro Minamidani, Norikazu Mizuno +14
We investigate the effects of Supergiant Shells (SGSs) and their interaction on dense molecular clumps by observing the Large Magellanic Cloud (LMC) star forming regions N48 and N4…
Uniform Estimates for the Flow of a Viscous Incompressible Fluid down an Inclined Plane in the Thin Film Regime
Hiroki Ueno, Akinori Shiraishi, Tatsuo Iguchi
We consider a two-dimensional motion of a thin film flowing down an inclined plane under the influence of the gravity and the surface tension. In order to investigate the stability…
A Light Curve Analysis of Classical Novae: Free-free Emission vs. Photospheric Emission
Izumi Hachisu, Mariko Kato
We analyzed light curves of seven relatively slower novae, PW Vul, V705 Cas, GQ Mus, RR Pic, V5558 Sgr, HR Del, and V723 Cas, based on an optically thick wind theory of nova outbur…
Isotope engineering of silicon and diamond for quantum computing and sensing applications
Kohei M. Itoh, Hideyuki Watanabe
Some of the stable isotopes of silicon and carbon have zero nuclear spin, whereas many of the other elements that constitute semiconductors consist entirely of stable isotopes that…
A stochastic behavior analysis of stochastic restricted-gradient descent algorithm in reproducing kernel Hilbert spaces
Masa-aki Takizawa, Masahiro Yukawa, Cedric Richard
This paper presents a stochastic behavior analysis of a kernel-based stochastic restricted-gradient descent method. The restricted gradient gives a steepest ascent direction within…
Quantifying the quantum gate fidelity of single-atom spin qubits in silicon by randomized benchmarking
J. T. Muhonen, A. Laucht, S. Simmons +9
Building upon the demonstration of coherent control and single-shot readout of the electron and nuclear spins of individual 31-P atoms in silicon, we present here a systematic expe…
The structure of rotational bands in alpha-cluster nuclei
Roelof Bijker
In this contribution, I discuss an algebraic treatment of alpha-cluster nuclei based on the introduction of a spectrum generating algebra for the relative motion of the alpha-clust…
Baryonic torii: Toroidal baryons in a generalized Skyrme model
Sven Bjarke Gudnason, Muneto Nitta
We study a Skyrme-type model with a potential term motivated by Bose-Einstein condensates (BECs), which we call the BEC Skyrme model. We consider two flavors of the model, the firs…
An inequality for spinor Bose-Einstein condensates
Daisuke A. Takahashi
An inequality for spin- Bose-Einstein condensates (BECs) is reported, where , , and represent the density, singlet…