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Akita Shi, Japan

Akita International University , or AIU, is a public university located in Akita City, Akita Prefecture, Japan. Established in 2004 and modeled on American liberal arts colleges, AIU is one of the few universities in Japan offering all of its courses in English. It has currently 157 partner institutions from all over the world.Its undergraduate program offers bachelor’s degrees in Global Business and Global Studies, and its graduate program offers master’s degrees in Japanese Language Teaching, English Language Teaching, and Global Communication Practices. The undergraduate program at Akita International University is unique in Japan. All courses are taught in English, with the exception of foreign language classes. Undergraduate students are expected to study overseas for one year of their academic program. Non-native English speaking students are prepared for using English in the classroom through the intensive English for Academic Purposes Program. Wikipedia.


Dumitru A.,York College | Lappi T.,University of Jyvaskyla | Lappi T.,Helsinki Institute of Physics | Nara Y.,Akita International University
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics | Year: 2014

We compute expectation values of spatial Wilson loops in the forward light cone of high-energy collisions. We consider ensembles of gauge field configurations generated from a classical Gaussian effective action as well as solutions of high-energy renormalization group evolution with fixed and running coupling. The initial fields correspond to a color field condensate exhibiting domain-like structure over distance scales of order the saturation scale. At later times universal scaling emerges at large distances for all ensembles, with a nontrivial critical exponent. Finally, we compare the results for the Wilson loop to the two-point correlator of magnetic fields. © 2014 The Authors. Source


Hirano T.,University of Tokyo | Hirano T.,Lawrence Berkeley National Laboratory | Huovinen P.,Goethe University Frankfurt | Nara Y.,Akita International University
Physical Review C - Nuclear Physics | Year: 2011

We predict the elliptic flow parameter v2 in U+U collisions at √sNN=200 GeV and in Pb+Pb collisions at √s NN=2.76 TeV using a hybrid model in which the evolution of the quark gluon plasma is described by ideal hydrodynamics with a state-of-the-art lattice QCD equation of state and the subsequent hadronic stage is described by a hadron cascade model. © 2011 American Physical Society. Source


Hirano T.,University of Tokyo | Hirano T.,Lawrence Berkeley National Laboratory | Huovinen P.,Goethe University Frankfurt | Nara Y.,Akita International University
Physical Review C - Nuclear Physics | Year: 2011

We analyze the elliptic flow parameter v2 in Pb+Pb collisions at √sNN = 2.76 TeV and in Au+Au collisions at √s NN=200 GeV using a hybrid model in which the evolution of the quark gluon plasma is described by ideal hydrodynamics with a state-of-the-art lattice QCD equation of state, and the subsequent hadronic stage by a hadron cascade model. For initial conditions, we employ Monte Carlo versions of the Glauber and the Kharzeev-Levin-Nardi models and compare results with each other. We demonstrate that the differential elliptic flow v2(pT) hardly changes when the collision energy increases, whereas the integrated v2 increases due to the enhancement of mean transverse momentum. The amount of increase of both v2 and mean pT depends significantly on the model of initialization. © 2011 American Physical Society. Source


Albacete J.L.,University Paris - Sud | Dumitru A.,York College | Dumitru A.,Brookhaven National Laboratory | Fujii H.,University of Tokyo | Nara Y.,Akita International University
Nuclear Physics A | Year: 2013

We present predictions for multiplicities and single inclusive particle production in proton-lead collisions at the LHC. The main dynamical input in our calculations is the use of solutions of the running coupling Balitsky-Kovchegov equation tested in e+p data. These are incorporated into a realistic model for the nuclear geometry including fluctuations of the nucleon configurations. Particle production is computed via either k t-factorization or the hybrid formalisms to obtain spectra and yields in the central and forward rapidity regions, respectively. These baseline predictions will be useful for testing our current understanding of the dynamics of very strong color fields against upcoming LHC data. © 2012 Elsevier B.V. Source


Nara Y.,Akita International University
Progress of Theoretical Physics Supplement | Year: 2012

By using Monte-Carlo implementations of kT -factorization formula with runningcoupling BK unintegrated gluon distributions for nucleus-nucleus collisions, we compute higher order harmonic moments of the initial density distribution for both RHIC(Au+Au@200GeV) and LHC(Pb+Pb@2.76TeV) collisions. We study their sensitivity to the size of the valence parton distribution in the nucleon. Source

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