Zobrazeno 1 - 10
of 233
pro vyhledávání: '"Naoki Kawashima"'
Autor:
Wei-Lin Tu, Laurens Vanderstraeten, Norbert Schuch, Hyun-Yong Lee, Naoki Kawashima, Ji-Yao Chen
Publikováno v:
PRX Quantum, Vol 5, Iss 1, p 010335 (2024)
Diagrammatic summation is a common bottleneck in modern applications of projected entangled-pair states, especially in computing low-energy excitations of a two-dimensional quantum many-body system. To solve this problem, here we extend the generatin
Externí odkaz:
https://doaj.org/article/29fa539b74534fd3982c2c5ffef3c26c
Publikováno v:
Physical Review Research, Vol 5, Iss 4, p 043061 (2023)
We use Monte Carlo simulations and tensor network methods to study a classical monomer-dimer model on the square lattice with a hole (monomer) fugacity z, an aligning dimer-dimer interaction u that favors columnar order, and an attractive dimer-dimer
Externí odkaz:
https://doaj.org/article/5a9ad8b1d7f841168f5debddb395db87
Autor:
Alexander Kovacs, Johann Fischbacher, Harald Oezelt, Alexander Kornell, Qais Ali, Markus Gusenbauer, Masao Yano, Noritsugu Sakuma, Akihito Kinoshita, Tetsuya Shoji, Akira Kato, Yuan Hong, Stéphane Grenier, Thibaut Devillers, Nora M. Dempsey, Tetsuya Fukushima, Hisazumi Akai, Naoki Kawashima, Takashi Miyake, Thomas Schrefl
Publikováno v:
Frontiers in Materials, Vol 9 (2023)
Rare-earth elements like neodymium, terbium and dysprosium are crucial to the performance of permanent magnets used in various green-energy technologies like hybrid or electric cars. To address the supply risk of those elements, we applied machine-le
Externí odkaz:
https://doaj.org/article/ba3de6b1961f495380a13d05ea592dea
Autor:
Hyun-Yong Lee, Ryui Kaneko, Li Ern Chern, Tsuyoshi Okubo, Youhei Yamaji, Naoki Kawashima, Yong Baek Kim
Publikováno v:
Nature Communications, Vol 11, Iss 1, Pp 1-7 (2020)
$$\alpha$$ α -RuCl$${}_{3}$$ 3 is a candidate Kitaev spin liquid but whether or not this is realised depends on the details of the magnetic interactions. Here, the authors use state-of-the-art numerical methods to predict that for a large parameter
Externí odkaz:
https://doaj.org/article/c9a29efe23cf4de6b2a74f618bb6c2d2
Publikováno v:
Physical Review Research, Vol 3, Iss 3, p 033190 (2021)
We propose a class of tight-binding systems of interacting bosons with a flat band, which are exactly solvable in the sense that one can explicitly write down the unique ground state. The ground state is expressed in terms of local creation operators
Externí odkaz:
https://doaj.org/article/1edd7facdcdb45daa9f354fae8d29240
Publikováno v:
Physical Review Research, Vol 3, Iss 2, p 023048 (2021)
We show a way to perform the canonical renormalization group (RG) prescription in tensor space: write down the tensor RG equation, linearize it around a fixed-point tensor, and diagonalize the resulting linearized RG equation to obtain scaling dimens
Externí odkaz:
https://doaj.org/article/7c30cd113a5a4154853623493a93e513
Autor:
Masatoshi Akazawa, Masaaki Shimozawa, Shunichiro Kittaka, Toshiro Sakakibara, Ryutaro Okuma, Zenji Hiroi, Hyun-Yong Lee, Naoki Kawashima, Jung Hoon Han, Minoru Yamashita
Publikováno v:
Physical Review X, Vol 10, Iss 4, p 041059 (2020)
We investigate the thermal-transport properties of the kagome antiferromagnet Cd-kapellasite (Cd-K). We find that a field-suppression effect on the longitudinal thermal conductivity κ_{xx} sets in below approximately 25 K. This field-suppression eff
Externí odkaz:
https://doaj.org/article/c35ad21ac19e4479be50c3678f0297b2
Publikováno v:
Physical Review Research, Vol 2, Iss 3, p 033318 (2020)
The spin-1/2 Kitaev model offers the exactly solvable example of quantum spin liquids. Possible material realizations of the spin-1/2 Kitaev systems and the prospect of using the Majorana fermion excitations for quantum computations have revolutioniz
Externí odkaz:
https://doaj.org/article/a1afc1410feb4eb2893127bf5de874ba
Autor:
Tsuyoshi Okubo, Naoki Kawashima
Publikováno v:
Journal of the Physical Society of Japan; 11/15/2023, Vol. 92 Issue 11, p114701-1-114701-7, 7p
Autor:
Satoshi Kitaoka, Makoto Tanaka, Naoki Kawashima, Taishi Ito, Daisaku Yokoe, Takeharu Kato, Takafumi Ogawa, Naoki Yamazaki, Nagisa Hosoya, Takeshi Nakamura
Publikováno v:
Journal of the American Ceramic Society.