34 citations · 308 across the 23 of their papers we have counts for
23 papers
Pre-hydrodynamic evolution in large and small systems
Tiago Nunes da Silva, David D. Chinellato, André V. Giannini +6
We extend our previous investigation of the effects of pre-hydrodynamic evolution on final-state observables in heavy-ion collisions to smaller systems. We use a state-of-the-art h…
Dissipation-relaxation dynamics of a spin-1/2 particle with a Rashba-type spin-orbit coupling in an ohmic heat bath
Tomohiro Hata, Eiji Nakano, Kei Iida +2
Spin-orbit coupling (SOC), which is inherent to a Dirac particle that moves under the influence of electromagnetic fields, manifests itself in a variety of physical systems includi…
Polaron Problems in Ultracold Atoms: Role of a Fermi Sea across Different Spatial Dimensions and Quantum Fluctuations of a Bose Medium
Hiroyuki Tajima, Junichi Takahashi, Simeon I. Mistakidis +2
The notion of a polaron, originally introduced in the context of electrons in ionic lattices, helps us to understand how a quantum impurity behaves when being immersed in and inter…
Extracting non-local inter-polaron interactions from collisional dynamics
Junichi Takahashi, Hiroyuki Tajima, Eiji Nakano +1
This study develops a novel experimental method of deducing the profile of interaction induced between impurities in a trapped gas of ultracold Fermi/Bose atoms, which are often re…
Collisional dynamics of polaronic clouds immersed in a Fermi sea
Hiroyuki Tajima, Junichi Takahashi, Eiji Nakano +1
We propose a new protocol to examine many-polaron properties in a cold atom experiment. Initially, polaronic clouds are prepared around the opposite edges of a majority gas cloud.…
Supersolidity of the cluster structure in the nucleus C
S. Ohkubo, J. Takahashi, Y. Yamanaka
For more than half a century, the structure of C, such as the ground band, has been understood to be well described by the three cluster model based on a geometrical cry…
Bose polaron in spherical trap potentials: Spatial structure and quantum depletion
Junichi Takahashi, Ryosuke Imai, Eiji Nakano +1
We investigate how the presence of a localized impurity in a Bose-Einstein condensate of trapped cold atoms that interact with each other weakly and repulsively affects the profile…
Bose-Einstein condensation of dilute alpha clusters above four threshold in O in field theoretical superfluid cluster model
Junichi Takahashi, Yoshiya Yamanaka, Shigeru Ohkubo
Observed well-developed cluster states in O, located above the four threshold, are investigated from the viewpoint of Bose-Einstein condensation of clusters by u…
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…
Pion and -meson screening masses at finite chemical potential in two-flavor lattice QCD with Wilson fermion
Junpei Sugano, Junichi Takahashi, Hiroaki Kouno +1
We investigate the real and imaginary chemical-potential dependence of pion and -meson screening masses in both the confinement and the deconfinement region by using two-flavor…
Sign problem in -symmetric effective Polyakov-line model
Takehiro Hirakida, Junpei Sugano, Hiroaki Kouno +2
As an effective model corresponding to -symmetric QCD (-QCD), we construct a -symmetric effective Polyakov-line model (-EPLM) by using the logarithmic fermion e…
Interplay between sign problem and Z_3 symmetry in three-dimensional Potts model
Takehiro Hirakida, Hiroaki Kouno, Junichi Takahashi +1
We construct four kinds of Z3-symmetric three-dimentional (3-d) Potts models, each with different number of states at each site on a 3-d lattice, by extending the 3-d three-state P…
Understanding of QCD at high density from Z3-symmetric QCD-like theory
Hiroaki Kouno, Kouji Kashiwa, Junichi Takahashi +2
We investigate QCD at large mu/T by using Z_3-symmetric SU(3) gauge theory, where mu is the quark-number chemical potential and T is temperature. We impose the flavor-dependent twi…
Determination of restoration from pion and -meson screening masses: Toward the chiral regime
Masahiro Ishii, Koji Yonemura, Junichi Takahashi +2
We incorporate the effective restoration of symmetry in the 2+1 flavor entanglement Polyakov-loop extended Nambu--Jona-Lasinio (EPNJL) model by introducing a tempera…
Phase structure of two-color QCD at real and imaginary chemical potentials; lattice simulations and model analyses
Takahiro Makiyama, Yuji Sakai, Takuya Saito +6
We investigate the phase structure of two-color QCD at both real and imaginary chemical potentials mu, performing lattice simulations and analyzing the data with the Polyakov-loop…
Quark number density at imaginary chemical potential and its extrapolation to large real chemical potential by the effective model
Junichi Takahashi, Junpei Sugano, Masahiro Ishii +2
We evaluate quark number densities at imaginary chemical potential by lattice QCD with clover-improved two-flavor Wilson fermion. The quark number densities are extrapolated to the…
Quark number densities at imaginary chemical potential in lattice QCD with Wilson fermions and its model analyses
Junichi Takahashi, Hiroaki Kouno, Masanobu Yahiro
We investigate temperature () dependence of quark number densities () at imaginary and real chemical potential () by using lattice QCD and the hadron resonance…
Determination of the strength of the vector-type four-quark interaction in the entanglement Polyakov-extended Nambu-Jona-Lasino model
Junpei Sugano, Junichi Takahashi, Masahiro Ishii +2
We determine the strength of the vector-type four-quark interaction in the entanglement Polyakov-extended Nambu-Jona-Lasinio (EPNJL) model from the results of recent la…
Formulation for zero mode of Bose-Einstein condensate beyond Bogoliubov approximation
Yusuke Nakamura, Junichi Takahashi, Yoshiya Yamanaka
It is shown for the Bose-Einstein condensate of cold atomic system that the new unperturbed Hamiltonian, which includes not only the first and second powers of the zero mode operat…
Heavy quark potential at finite imaginary chemical potential
Junichi Takahashi, Takahiro Sasaki, Keitaro Nagata +4
We investigate chemical-potential () dependence of the static-quark free energies in both the real and imaginary regions, using the clover-improved two-flavor Wilson fermion…
Color screening potential at finite density in two-flavor lattice QCD with Wilson fermions
Junichi Takahashi, Keitaro Nagata, Takuya Saito +4
We investigate chemical-potential (μ) dependence of static-quark free energies in both the real and imaginary μregions, performing lattice QCD simulations at imaginary μand extrapo…
Model approach to the sign problem on lattice QCD with theta vacuum
Takahiro Sasaki, Junichi Takahashi, Yuji Sakai +2
We propose a practical way of circumventing the sign problem in lattice QCD simulations with a theta-vacuum term. This method is the reweighting method for the QCD Lagrangian after…
Theta vacuum and entanglement interaction in the three-flavor Polyakov-loop extended Nambu-Jona-Lasinio model
Takahiro Sasaki, Junichi Takahashi, Yuji Sakai +2
We investigate theta-vacuum effects on the QCD phase diagram for the realistic 2+1 flavor system, using the three-flavor Polyakov-extended Nambu-Jona-Lasinio (PNJL) model and the e…