670 citations · 3.9k across the 62 of their papers we have counts for
62 papers
Symmetry projection to coupled-cluster singles and doubles wave function through the Monte Carlo method
Takahiro Mizusaki, Peter Schuck
A new method for calculating the symmetry-projected energy of coupled-cluster singles and doubles (CCSD) wave function through the Monte Carlo method is proposed. We present benchm…
Thick-Restart Block Lanczos Method for Large-Scale Shell-Model Calculations
Noritaka Shimizu, Takahiro Mizusaki, Yutaka Utsuno +1
We propose a thick-restart block Lanczos method, which is an extension of the thick-restart Lanczos method with the block algorithm, as an eigensolver of the large-scale shell-mode…
Variational Monte Carlo method for shell-model calculations in odd-mass nuclei and restoration of symmetry
Noritaka Shimizu, Takahiro Mizusaki
We investigate two kinds of extensions for the variational Monte Carlo (VMC) method with the Pfaffian in the nuclear shell-model calculations. One is the extension to odd-mass nucl…
Isoscalar neutron-proton pairing and SU(4)-symmetry breaking in Gamow-Teller transitions
K. Kaneko, Y. Sun, T. Mizusaki
The isoscalar neutron-proton pairing is thought to be important for nuclei with equal number of protons and neutrons but its manifestation in structure properties remains to be und…
Why does the sign problem occur in evaluating the overlap of HFB wave functions?
Takahiro Mizusaki, Makito Oi, Noritaka Shimizu
For the overlap matrix element between Hartree-Fock-Bogoliubov states, there are two analytically different formulae: one with the square root of the determinant (the Onishi formul…
Stochastic Estimation of Nuclear Level Density in the Nuclear Shell Model: An Application to Parity-Dependent Level Density in Ni
Noritaka Shimizu, Yutaka Utsuno, Yasunori Futamura +3
We introduce a novel method to obtain level densities in large-scale shell-model calculations. Our method is a stochastic estimation of eigenvalue count based on a shifted Krylov-s…