99 citations · 460 across the 14 of their papers we have counts for
14 papers
Variational Quantum Operator Simulation
Satoru Shoji, Kosuke Ito, Yukihiro Shimizu +1
Implementing time-evolution operators in shallow quantum circuits is important for quantum simulations. The standard method of Trotterization requires a large number of gates to ac…
Heavy quark spin multiplet structure of , , and
Yuki Shimizu, Yasuhiro Yamaguchi, Masayasu Harada
Very recently, the LHCb collaboration has reported the new result about the hidden-charm pentaquarks: near the threshold, and and n…
Heavy quark spin multiplet structure of -like pentaquark as P-wave hadronic molecular state
Yuki Shimizu, Yasuhiro Yamaguchi, Masayasu Harada
We study the heavy quark spin (HQS) multiplet structure of P-wave -type pentaquarks treated as molecules of a heavy meson and a heavy baryon. We define the light-cloud…
Heavy quark spin multiplet structure of molecular states
Yuki Shimizu, Yasuhiro Yamaguchi, Masayasu Harada
We study the structure of heavy quark spin (HQS) multiplets for heavy meson-baryon molecular states in a coupled system of , with constructing the one-pio…
Hidden Charm Pentaquark and Doubly Charmed Baryon as Hadronic Molecule States
Yuki Shimizu, Masayasu Harada
We study hadronic molecular states in a coupled system of in channel, using the complex sca…
Coupled channel analysis of molecule picture of
Yuki Shimizu, Daiki Suenaga, Masayasu Harada
We construct a potential obtained by one-pion exchange for the coupled channel -, and solve the coupled Schrödinger equations to determine the…
Strong Suppression of Coherence Effect and Appearance of Pseudogap in Layered Nitride Superconductor Li_xZrNCl: ^91Zr- and ^15N- NMR Studies
Hisashi Kotegawa, Satoru Oshiro, Yuki Shimizu +5
We present NMR measurements of the layered nitride superconductor Li_xZrNCl. The nuclear spin-lattice relaxation rate, 1/T_1, shows that the coherence peak is strongly suppressed i…
Application of matrix product states to the Hubbard model in one spatial dimension
Yukihiro Shimizu, Koji Matsuura, Hikaru Yahagi
We investigate the application of matrix product states to the Hubbard model in one spatial dimension with both of open and periodic boundary conditions. We develop the variatinal…
Band Calculation for Ce-compounds on the basis of Dynamical Mean Field Theory
O. Sakai, Y. Shimizu, Y. Kaneta
The band calculation scheme for electron compounds is developed on the basis of the dynamical mean field theory (DMFT) and the LMTO method. The auxiliary impurity problem is so…
Kondo Effect in Single Quantum Dot Systems --- Study with Numerical Renormalization Group Method ---
Wataru Izumida, Osamu Sakai, Yukihiro Shimizu
The tunneling conductance is calculated as a function of the gate voltage in wide temperature range for the single quantum dot systems with Coulomb interaction. We assume that two…
Numerical Renormalization Group Study of non-Fermi-liquid State on Dilute Uranium Systems
Y. Shimizu, O. Sakai, S. Suzuki
We investigate the non-Fermi-liquid (NFL) behavior of the impurity Anderson model (IAM) with non-Kramers doublet ground state of the f configuration under the tetragonal crysta…
Many Body Effects on Electron Tunneling through Quantum Dots in an Aharonov-Bohm Circuit
Wataru Izumida, Osamu Sakai, Yukihiro Shimizu
Tunneling conductance of an Aharonov-Bohm circuit including two quantum dots is calculated based on the general expression of the conductance in the linear response regime of the b…
An Extended Anderson Model that shows Decreasing Resistivity with Decreasing Temperature
S. Suzuki, O. Sakai, Y. Shimizu
The resistivity for an extended two channel Anderson model is calculated. When the temperature decreases, it decreases logarithmically, and has T^1/2 anomaly at very low temperatur…
Numerical Renormalization-Group Study of Particle-Hole Symmetry Breaking in Two-Channel Kondo Problem : Effect of Repulsion between Conduction Electrons and Potential Scattering
H. Kusunose, K. Miyake, Y. Shimizu +1
Particle-hole symmetry breaking perturbation in two-channel pseudospin Kondo problem is studied by the numerical renormalization-group method. It is shown that the repulsion betwee…