no code implementations • 11 Jan 2021 • Wei-Lin Tu, Huan-Kuang Wu, Norbert Schuch, Naoki Kawashima, Ji-Yao Chen
The understanding of complex quantum many-body systems has been vastly boosted by tensor network (TN) methods.
Strongly Correlated Electrons Quantum Physics
no code implementations • 23 Oct 2020 • Takuhiro Ogino, Ryui Kaneko, Satoshi Morita, Shunsuke Furukawa, Naoki Kawashima
We investigate a quantum phase transition between a Neel phase and a valence bond solid (VBS) phase, in each of which a different Z2 symmetry is broken, in a spin-1/2 two-leg XXZ ladder with a four-spin interaction.
Strongly Correlated Electrons
no code implementations • 4 Sep 2020 • Satoshi Morita, Naoki Kawashima
A tensor network renormalization algorithm with global optimization based on the corner transfer matrix is proposed.
Statistical Mechanics Computational Physics
no code implementations • 21 Aug 2019 • Hyun-Yong Lee, Ryui Kaneko, Li Ern Chern, Tsuyoshi Okubo, Youhei Yamaji, Naoki Kawashima, Yong Baek Kim
Recent discovery of the half quantized thermal Hall conductivity in $\alpha$-RuCl$_3$, a candidate material for the Kitaev spin liquid, suggests the presence of a highly entangled quantum state in external magnetic fields.
Strongly Correlated Electrons
no code implementations • 4 Jul 2019 • Hyun-Yong Lee, Ryui Kaneko, Tsuyoshi Okubo, Naoki Kawashima
In particular, the variational energy of the LG state becomes exact(within machine precision) at two limits in the model, and the criticality at one of those is analytically derived from the LG feature.
Strongly Correlated Electrons Statistical Mechanics
no code implementations • 17 Jan 2019 • Hyun-Yong Lee, Ryui Kaneko, Tsuyoshi Okubo, Naoki Kawashima
We provide a framework for understanding the gapless Kitaev spin liquid (KSL) in the language of tensor network(TN).
Strongly Correlated Electrons Quantum Gases Statistical Mechanics
1 code implementation • 15 Aug 2018 • Hiroshi Watanabe, Satoshi Morita, Synge Todo, Naoki Kawashima
We present efficient algorithms to generate a bit string in which each bit is set with arbitrary probability.
Statistical Mechanics Computational Physics
1 code implementation • 10 Mar 2017 • Mitsuaki Kawamura, Kazuyoshi Yoshimi, Takahiro Misawa, Youhei Yamaji, Synge Todo, Naoki Kawashima
${\mathcal H}\Phi$ [$aitch$-$phi$] is a program package based on the Lanczos-type eigenvalue solution applicable to a broad range of quantum lattice models, i. e., arbitrary quantum lattice models with two-body interactions, including the Heisenberg model, the Kitaev model, the Hubbard model and the Kondo-lattice model.
Strongly Correlated Electrons
