Zobrazeno 1 - 10
of 39
pro vyhledávání: '"Kouichi Seki"'
Publikováno v:
AIP Advances, Vol 8, Iss 10, Pp 101401-101401-4 (2018)
We study low-energy properties of the S=1/2 kagome-triangular-strip Heisenberg model. Using exact diagonalization, we calculate magnetization curves of the model in the ferromagnetic kagome coupling regime, where the singlet ground state and 1/3 plat
Externí odkaz:
https://doaj.org/article/fb1cfc22af6a4b9b9b1212979e267389
Publikováno v:
Physical Review B. 102
Novel randomness-induced disordered ground states in two-dimensional (2D) quantum spin systems have been attracting much interest. For quantitative analysis of such random quantum spin systems, one of the most promising numerical approaches is the te
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::56d2d92ff93ab6f1f3ac67de1b592933
https://doi.org/10.1103/physrevb.102.144439
https://doi.org/10.1103/physrevb.102.144439
Autor:
Kouichi Okunishi, Kouichi Seki
For the XXZ chain, we discuss the relation between a lattice version of Unruh effect and the ground-state entanglement on the basis of the corner Hamiltonian. We find that the lattice Unruh temperature is interpreted as $\beta_\lambda = 2\pi/a$ with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2d1d6a4aacf3b7544f156d965310df4e
http://arxiv.org/abs/1906.10441
http://arxiv.org/abs/1906.10441
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-10 (2023)
Abstract Eddy current (EC) testing has been selected as a standard candidate for detecting defects in conductive materials in the past few decades. Nevertheless, inventing EC probes capable of detecting minor defects has always been challenging for r
Externí odkaz:
https://doaj.org/article/a18be031889841d4b06ea28a4e42f26a
Autor:
Kouichi Okunishi, Kouichi Seki
Publikováno v:
Journal of the Physical Society of Japan. 88:024003
We introduce a snapshot density matrix and snapshot spectrum for world-line (WL) quantum Monte Carlo simulations, by integrating out the continuous-imaginary-time index of WL snapshots. For the transverse-field Ising chain, we reveal fundamental prop
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dd57b0654379c2c24fba2841e86f671b
https://doi.org/10.7566/jpsj.88.024003
https://doi.org/10.7566/jpsj.88.024003
Publikováno v:
AIP Advances, Vol 8, Iss 10, Pp 101401-101401-4 (2018)
We study low-energy properties of the S=1/2 kagome-triangular-strip Heisenberg model. Using exact diagonalization, we calculate magnetization curves of the model in the ferromagnetic kagome coupling regime, where the singlet ground state and 1/3 plat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::29ab1805e4baf2cfe73a9c68a0ec4d5c
https://doaj.org/article/fb1cfc22af6a4b9b9b1212979e267389
https://doaj.org/article/fb1cfc22af6a4b9b9b1212979e267389
Autor:
Kouichi Seki, Kouichi Okunishi
Publikováno v:
Journal of the Physical Society of Japan. 87:023001
Using the event-chain Monte Carlo (MC) algorithm, we investigate phase transitions of the stacked Kagome Heisenberg systems with classical vector spins including up to the 3rd-nearest-neighbor couplings. In particular, we focus on two types of non-co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::87ae5b2116d6327ed6d8effbda39f25c
https://doi.org/10.7566/jpsj.87.023001
https://doi.org/10.7566/jpsj.87.023001
Publikováno v:
Electrical Engineering in Japan. 167:24-31
This paper describes a method for calculation of the effective relative dielectric constant es of VVF cable. For power line communications (PLC), VVF cables in homes are used as 2- to 30-MHz high-frequency transmission media. As they are not designed
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f4aca5a7a480a58fbdb9d56d04c7cd5d
https://doi.org/10.1002/eej.20862
https://doi.org/10.1002/eej.20862
Autor:
H Maeda, F Kawakami, Kouichi Seki, Yuji Matsuzawa, Yoshinori Doi, Shinichi Kiso, Y. Imai, Y Minami, K Kiriyama, Shinichi Tamura, S Kawata, T Kashihara, S Himeno, M Nishiuchi, M Nishioka, Iwao Yabuuchi, Y. Shinji, Kazuto Fukuda, Nobuyuki Ito, Yasuhiro Shirai, Takumi Igura, Toshifumi Ito
Publikováno v:
Liver. 17:88-92
To compare the efficacy of low and relatively high dosages of recombinant interferon (IFN)-alpha-2a in Japanese patients with chronic hepatitis C, as well as to characterize the type of patients who will respond well to a low-dosage treatment, 88 pat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2ee5ef274b55ca2ac1f88422bc043075
https://doi.org/10.1111/j.1600-0676.1997.tb00786.x
https://doi.org/10.1111/j.1600-0676.1997.tb00786.x
Autor:
Kouichi Okunishi, Kouichi Seki
Publikováno v:
Physical Review B. 91
Using Monte Carlo simulations, we explore the magnetic phase diagram of the triangular spin tubes coupled with a ferromagnetic inter-tube interaction for CsCrF4. A planar structure of the coupled tubes is topologically equivalent to the Kagome-triang
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::738e39a37d6475532e714f008a2fcf0f
https://doi.org/10.1103/physrevb.91.224403
https://doi.org/10.1103/physrevb.91.224403