Zobrazeno 1 - 10
of 133
pro vyhledávání: '"Kouichi Okunishi"'
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 11, Pp 1-32 (2023)
Abstract We propose a new technique to incorporate multiple fermion flavors in the tensor renormalization group method for lattice gauge theories, where fermions are treated by the Grassmann tensor network formalism. The basic idea is to separate the
Externí odkaz:
https://doaj.org/article/f14f66cc83fe4e898652e229568bef63
Publikováno v:
Physical Review Research, Vol 5, Iss 1, p 013031 (2023)
The tree tensor network (TTN) provides an essential theoretical framework for the practical simulation of quantum many-body systems, where the network structure defined by the connectivity of the isometry tensors plays a crucial role in improving its
Externí odkaz:
https://doaj.org/article/d6bdf3a69b1247b990b64f543042e241
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. 107
In quantum spin-1 chains, there is a nonlocal unitary transformation known as the Kennedy-Tasaki transformation $U_{\text{KT}}$, which defines a duality between the Haldane phase and the $\mathbb{Z}_2 \times \mathbb{Z}_2$ symmetry-breaking phase. In
Autor:
Shojiro Kimura, Hiroaki Onishi, Kouichi Okunishi, Mitsuru Akaki, Yasuo Narumi, Masayuki Hagiwara, Koichi Kindo, Hikomitsu Kikuchi
Publikováno v:
Journal of the Physical Society of Japan; 9/15/2023, Vol. 92 Issue 9, p1-9, 9p
We propose the entanglement bipartitioning approach to design an optimal network structure of the tree-tensor-network (TTN) for quantum many-body systems. Given an exact ground-state wavefunction, we perform sequential bipartitioning of spin-cluster
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d50c0037ca13fe7734fe3742f167402f
http://arxiv.org/abs/2210.11741
http://arxiv.org/abs/2210.11741
Publikováno v:
Applied Magnetic Resonance. 52:349-362
We review terahertz (THz) electron spin resonance studies of two types of exotic quantum spin systems, namely, the spin(S)-1/2 one-dimensional (1D) Ising-like antiferromagnet BaCo $$_2$$ V $$_2$$ O $$_8$$ and the S=1/2 two-dimensional (2D) honeycomb-
Autor:
Shojiro Kimura, Hiroaki Onishi, Akira Okutani, Mitsuru Akaki, Yasuo Narumi, Masayuki Hagiwara, Kouichi Okunishi, Koichi Kindo, Zhangzhen He, Tomoyasu Taniyama, Mitsuru Itoh
Publikováno v:
Physical Review B. 105
Autor:
Masayuki Hagiwara, Takanori Kida, Yuya Sakaguchi, Haruka Kyakuno, Zentaro Hondad, Kazuyuki Matsuda, Masamichi Sakai, Makoto Tashiro, Kouichi Okunishi, Yutaka Mniwa, Takeshi Fukuda, Norihiko Kamata
Publikováno v:
Open Chemistry Journal. 6:27-33
Background: In this paper, we report on the topics of one-dimensional (1D) and two-dimensional (2D) functional materials. Single-Walled Carbon Nanotubes (SWCNTs) are seamless hollow cylinders made of hexagonal lattice graphite sheets. The SWCNTs have
Tensor networks (TNs) have become one of the most essential building blocks for various fields of theoretical physics such as condensed matter theory, statistical mechanics, quantum information, and quantum gravity. This review provides a unified des
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1b4c52ed953c311e9c69f1718a81e8b3