Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- The University of TokyoJP4.5k papers
- Yukawa Institute for Theoretical PhysicsJP2.7k papers
- The University of OsakaJP2.3k papers
- Nagoya UniversityJP2.2k papers
- High Energy Accelerator Research OrganizationJP2.2k papers
- Centre National de la Recherche ScientifiqueFR2.1k papers
- Tokyo Institute of TechnologyJP2k papers
- University of TsukubaJP1.7k papers
- Brookhaven National LaboratoryUS1.6k papers
- Stony Brook UniversityUS1.5k papers
- Waseda UniversityJP1.5k papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR1.5k papers
296 papers · 1 filter
An Extremely Red Nucleus in an Absorbed QSO at z=0.65
Masayuki Akiyama, Kouji Ohta
The results of K-band-imaging observations of a candidate of an absorbed QSO at z=0.653, AX J131831+3341, are presented. The B-K color of the object is 4.85 mag, which is much redd…
Deep-Imaging Observations of a Candidate of an Absorbed QSO at z=0.653, AX J131831+3341
M. Akiyama, K. Ohta, N. Tamura +12
The results of deep-imaging observations of a candidate of an absorbed QSO at z=0.653, AX J131831+3341, are presented. AX J131831+3341 was found during the course of optical follow…
Dielectric and Dilatometric Studies of Glass Transitions in Thin Polymer Films
Koji Fukao, Yoshihisa Miyamoto
Dielectric relaxation and thermal expansion spectroscopy were made for thin polystyrene films in order to measure the temperature corresponding to the peak in the loss compon…
Optimized Perturbation Theory at Finite Temperature--- Two-Loop Analysis---
S. Chiku
We study the optimized perturbation theory (OPT) at finite temperature, which is a self-consistent resummation method. Firstly, we generalize the idea of the OPT to optimize the co…
One-Dimensional String Theory with Vortices as Upside-Down Matrix Oscillator
Dmitri Boulatov, Vladimir Kazakov
We study matrix quantum mechanics at a finite temperature equivalent to one dimensional compactified string theory with vortex (winding) excitations. It is explicitly demonstrated…
Radiative decay of a massive particle and the non-thermal process in primordial nucleosynthesis
M. Kawasaki, K. Kohri, Takeo Moroi
We consider the effects on big bang nucleosynthesis (BBN) of the radiative decay of a long-lived massive particle. If high-energy photons are emitted after the BBN epoch ($t \sim 1…
Nonlinear Realization of Partially Broken N=2 AdS Supersymmetry in Two and Three Dimensions
Masayuki Sano, Tsuneo Uematsu
We investigate the nonlinear realization of partially broken =2 global supersymmetry in the D=2 and 3 anti de-Sitter (AdS) space. We particularly study Nambu-Goldstone degrees o…
Can we distinguish SUSY breaking terms between weakly and strongly coupled heterotic string theories ?
Tatsuo Kobayashi
We study soft SUSY breaking terms in heterotic M-theory. We show that both weakly and strongly coupled heterotic string models lead to the same relations of soft SUSY breaking term…
Loop algorithm for Heisenberg models with biquadratic interaction and phase transitions in two dimensions
Kenji Harada, Naoki Kawashima
We present a new algorithm for quantum Monte Carlo simulation based on global updating with loops. While various theoretical predictions are confirmed in one dimension, we find, fo…
Behavior of Cosmological Perturbations in the Brane-World Mode
Hideo Kodama
In this paper we present a gauge-invariant formalism for perturbations of the brane-world model developed by the author, A. Ishibashi and O. Seto recently, and analyze the behavior…
Discovery of a 9-s X-Ray Pulsar, AX J0049-732, in the Small Magellanic Cloud
Masaru Ueno, Jun Yokogawa, Kensuke Imanishi +1
We report the ASCA discovery of a new X-ray pulsar, AX J0049-732, in the Small Magellanic Cloud (SMC). The pulse shape is sinusoidal with a barycentric period of 9.1320 +/- 0.0004…
ASCA Discovery of Diffuse 6.4 keV Emission Near the Sgr C Complex: A New X-ray Reflection Nebula
H. Murakami, K. Koyama, M. Tsujimoto +2
We present an ASCA discovery of diffuse hard X-ray emission from the Sgr C complex with its peak in the vicinity of the molecular cloud core. The X-ray spectrum is characterized by…
Descent Relation of Tachyon Condensation from Boundary String Field Theory
Sanefumi Moriyama, Shin Nakamura
We analyze how lower-dimensional bosonic D-branes further decay, using the boundary string field theory. Especially we find that the effective tachyon potential of the lower-dimens…
Gravitational waves in cosmological models of Hořava-Witten theory
Osamu Seto, Hideo Kodama
We study the behavior of gravitational waves and their backreaction on the background in cosmological solutions of the five-dimensional Hořava-Witten theory. As a dynamical backgro…
Evidence for a source size of less than 2000 AU in Quasar 2237+0305
Atsunori Yonehara
Recently, OGLE team have reported clear quasar microlensing signal in Q2237+0305. We have analyzed the microlens event of ``image C'' by using their finely and densely sampled ligh…
Thin Ice Target for O(p,p') experiment
T. Kawabata, H. Akimune, H. Fujimura +26
A windowless and self-supporting ice target is described. An ice sheet with a thickness of 29.7 mg/cm cooled by liquid nitrogen was placed at the target position of a magnetic…
The First Search for Gravitational Waves from Inspiraling Compact Binaries using TAMA300 data
Hideyuki Tagoshi, Nobuyuki Kanda, Takahiro Tanaka +2
We analyzed 6 hours of data from the TAMA300 detector by matched filtering, searching for gravitational waves from inspiraling compact binaries. We incorporated a two-step hierarch…
Possible direct method to determine the radius of a star from the spectrum of gravitational wave signals II : Spectra for various cases
Motoyuki Saijo, Takashi Nakamura
We compute the spectrum and the waveform of gravitational waves generated by the inspiral of a disk or a spherical like dust body into a Kerr black hole. We investigate the effect…
General Forms of a N-fold Supersymmetric Family
Hideaki Aoyama, Masatoshi Sato, Toshiaki Tanaka
We report general forms of one family of the N-fold supersymmetry in one-dimensional quantum mechanics. The N-fold supersymmetry is characterized by the supercharges which are N-th…
Centrality Dependence of Charged Particle Multiplicity in Au-Au Collisions at sqrt(s_NN)=130 GeV
PHENIX Collaboration, K. Adcox
We present results for the charged-particle multiplicity distribution at mid-rapidity in Au - Au collisions at sqrt(s_NN)=130 GeV measured with the PHENIX detector at RHIC. For the…
Low-energy propagation modes on string network
Naoki Sasakura
We study low-energy propagation modes on string network lattice. Specifically, we consider an infinite two-dimensional regular hexagonal string network and analyze the low frequenc…
Deconfining Phase Transition in QCD_4 and QED_4 at Finite Temperature
Kentaroh Yoshida
We investigate the deconfining phase transition in QCD_4 and QED_4 at finite temperature using a perturbative deformation of topological quantum field theory (TQFT). A modified max…
The Isotropy of Compact Universes
John D. Barrow, Hideo Kodama
We discuss the problem of the stability of the isotropy of the universe in the space of ever-expanding spatially homogeneous universes with a compact spatial topology. The anisotro…
Slow dynamics near glass transitions in thin polymer films
Koji Fukao, Yoshihisa Miyamoto
The -process (segmental motion) of thin polystyrene films supported on glass substrate has been investigated in a wider frequency range from 10 Hz to 10 Hz using diel…