71 citations · 406 across the 21 of their papers we have counts for
21 papers
Large-amplitude quadrupole shape mixing probed by the reaction : a model analysis
Koichi Sato, Takenori Furumoto, Yuma Kikuchi +2
To discuss a possible observation of large-amplitude nuclear shape mixing by nuclear reaction, we employ a simple collective model and evaluate transition densities, with which the…
Adiabatic approach to large-amplitude collective motion with the higher-order collective-coordinate operator
Koichi Sato
We propose a new set of equations to determine the collective Hamiltonian including the second-order collective-coordinate operator on the basis of the adiabatic self-consistent co…
Relation of terms to higher-order terms in the adiabatic expansion for large-amplitude collective motion
Koichi Sato
We investigate the relation of terms in the collective operator to the higher-order terms in the adiabatic self-consistent collective coordinate (ASCC) method. In the…
Isospin-symmetry breaking in masses of nuclei
Pawel Baczyk, Jacek Dobaczewski, Maciej Konieczka +3
Effects of the isospin-symmetry breaking (ISB) beyond mean-field Coulomb terms are systematically studied in nuclear masses near the line. The Coulomb exchange contributions…
Gauge symmetry breaking in the adiabatic self-consistent collective coordinate method
Koichi Sato
We study gauge symmetry breaking by adiabatic approximation in the adiabatic self-consistent collective coordinate (ASCC) method. In the previous study, we found that the gauge sym…
Microscopic derivation of the Bohr-Mottelson collective Hamiltonian and its application to quadrupole shape dynamics
Kenichi Matsuyanagi, Masayuki Matsuo, Takashi Nakatsukasa +3
We discuss the nature of the low-frequency quadrupole vibrations from small-amplitude to large-amplitude regimes. We consider full five-dimensional quadrupole dynamics including th…
Gauge Symmetry in the Large-amplitude Collective Motion of Superfluid Nuclei
Koichi Sato
The adiabatic self-consistent collective coordinate (ASCC) method is a practical method for the description of large-amplitude collective motion in atomic nuclei with superfluidity…
Microscopic derivation of the quadrupole collective Hamiltonian for shape coexistence/mixing dynamics
Kenichi Matsuyanagi, Masayuki Matsuo, Takashi Nakatsukasa +3
Assuming that the time-evolution of the self-consistent mean field is determined by five pairs of collective coordinate and collective momentum, we microscopically derive the colle…
Mean-Field Calculation Based on Proton-Neutron Mixed Energy Density Functionals
Koichi Sato, Jacek Dobaczewski, Takashi Nakatsukasa +1
We have performed calculations based on the Skyrme energy density functional (EDF) that includes arbitrary mixing between protons and neutrons. In this framework, single-particle s…
Quadrupole shape dynamics in view from a theory of large amplitude collective motion
M. Matsuo, N. Hinohara, K. Sato +3
Low-lying quadrupole shape dynamics is a typical manifestation of large amplitude collective motion in finite nuclei. To describe the dynamics on a microscopic foundation, we have…
Energy-density-functional calculations including the proton-neutron mixing
Koichi Sato, Jacek Dobaczewski, Takashi Nakatsukasa +1
We present results of calculations based on the Skyrme energy density functional including the arbitrary mixing between protons and neutrons. In this framework, single-particle sta…
Linear-response calculation in the time-dependent density functional theory
Takashi Nakatsukasa, Tsunenori Inakura, Paolo Avogadro +3
Linear response calculations based on the time-dependent density-functional theory are presented. Especially, we report results of the finite amplitude method which we have recentl…
Shape transition and fluctuation in neutron-rich Cr isotopes around N = 40
Koichi Sato, Nobuo Hinohara, Kenichi Yoshida +3
The spherical-to-prolate shape transition in neutron-rich Cr isotopes from N = 34 to 42 is studied by solving the collective Schr\"odinger equation for the five-dimensional quadru…
BCS-pairing and nuclear vibrations
Kenichi Matsuyanagi, Nobuo Hinohara, Koichi Sato
On the basis of time-dependent mean-field picture, we discuss the nature of the low-frequency quadrupole vibrations from small-amplitude to large-amplitude regimes as representativ…
Microscopic approach to large-amplitude deformation dynamics with local QRPA inertial masses
Koichi Sato, Nobuo Hinohara, Takashi Nakatsukasa +2
We have developed a new method for determining microscopically the fivedimensional quadrupole collective Hamiltonian, on the basis of the adiabatic self-consistent collective coord…
Shape fluctuations in the ground and excited 0+ states of 30Mg and 32Mg
Nobuo Hinohara, Koichi Sato, Kenichi Yoshida +3
Large-amplitude collective dynamics of shape phase transition in the low-lying states of 30-36Mg is investigated by solving the five-dimensional (5D) quadrupole collective Schroedi…
Microscopic description of large-amplitude shape-mixing dynamics with local QRPA inertial functions
Nobuo Hinohara, Koichi Sato, Kenichi Yoshida +2
We introduce a microscopic approach to derive all the inertial functions in the five-dimensional quadrupole collective Hamiltonian. Local normal modes are evaluated on the constrai…
Shape mixing dynamics in the low-lying states of proton-rich Kr isotopes
Koichi Sato, Nobuo Hinohara
We study the oblate-prolate shape mixing in the low-lying states of proton-rich Kr isotopes using the five-dimensional quadrupole collective Hamiltonian. The collective Hamiltonian…
Microscopic description of large-amplitude shape-mixing dynamics with inertial functions derived in local quasiparticle random-phase approximation
Nobuo Hinohara, Koichi Sato, Takashi Nakatsukasa +2
On the basis of the adiabatic self-consistent collective coordinate method, we develop an efficient microscopic method of deriving the five-dimensional quadrupole collective Hamilt…
Open problems in microscopic theory of large-amplitude collective motion
K. Matsuyanagi, M. Matsuo, T. Nakatsukasa +2
Construction of the microscopic theory of large-amplitude collective motion, capable of describing a wide variety of quantum collective phenomena in nuclei, is a long-standing and…
A Model Analysis of Triaxial Deformation Dynamics in Oblate-Prolate Shape Coexistence Phenomena
Koichi Sato, Nobuo Hinohara, Takashi Nakatsukasa +2
From a viewpoint of oblate-prolate symmetry and its breaking, we adopt the quadrupole collective Hamiltonian to study dynamics of triaxial deformation in shape coexistence phenomen…