Zobrazeno 1 - 10
of 7 019
pro vyhledávání: '"SHAO, Hui"'
Ground state of the S = 1/2 Heisenberg spin chain with random ferro- and antiferromagnetic couplings
We study the Heisenberg $S=1/2$ chain with random ferro- and antiferromagnetic couplings, using quantum Monte Carlo simulations at ultra-low temperatures, converging to the ground state. Finite-size scaling of correlation functions and excitation gap
Externí odkaz:
http://arxiv.org/abs/2408.12911
We study the excitation spectrum of the $S=1/2$ Heisenberg model on the randomly diluted square lattice by analytic continuation of QMC data. At dilution fractions $p=1/16$ and $p=1/8$, the dynamic structure factor $S({\bf q},\omega)$ exhibits a damp
Externí odkaz:
http://arxiv.org/abs/2408.06749
We resolve the nature of the quantum phase transition between a N\'eel antiferromagnet and a valence-bond solid in two-dimensional spin-1/2 magnets. We study a class of $J$-$Q$ models, in which Heisenberg exchange $J$ competes with interactions $Q_n$
Externí odkaz:
http://arxiv.org/abs/2405.06607
Electronic health records (EHRs) contain valuable patient data for health-related prediction tasks, such as disease prediction. Traditional approaches rely on supervised learning methods that require large labeled datasets, which can be expensive and
Externí odkaz:
http://arxiv.org/abs/2403.15464
Publikováno v:
Front. Phys. 19, 63202 (2024)
We investigate the magnetic excitations of the trimerized Heisenberg models with intra-trimer interaction $J_1$ and inter-trimer interaction $J_2$ on four different two-dimensional lattices using a combination of stochastic series expansion quantum M
Externí odkaz:
http://arxiv.org/abs/2401.00376
Publikováno v:
Zhongguo quanke yixue, Vol 27, Iss 29, Pp 3672-3678 (2024)
Background The global prevalence of low back pain is gradually increasing, and it is the main cause of disability, sick leave, and unemployment, posing a heavy burden on individuals and society. Assessing the degree of disability in patients with chr
Externí odkaz:
https://doaj.org/article/405a825c02724e04b55b1f14f6c30fa5
Publikováno v:
Phys. Rev. B 109, L140408 (2024)
Using quantum Monte Carlo simulations and field-theory arguments, we study the fully frustrated (Villain) transverse-field Ising model on the square lattice. We consider a "primary" spin order parameter and a "secondary" dimer order parameter, which
Externí odkaz:
http://arxiv.org/abs/2309.02407
Autor:
Xia, Yuhao, Xu, Shilong, Shao, Hui, Hou, Ahui, Fang, Jiajie, Han, Fei, Chen, Youlong, Wen, Jiaqi, Chen, Yuwei, Hu, Yihua
Waveform decomposition is needed as a first step in the extraction of various types of geometric and spectral information from hyperspectral full-waveform LiDAR echoes. We present a new approach to deal with the "Pseudo-monopulse" waveform formed by
Externí odkaz:
http://arxiv.org/abs/2303.07089
Autor:
Shao Hui Koh, Jacqueline C. L. Tan
Publikováno v:
Journal of Acute Disease, Vol 13, Iss 2, Pp 81-84 (2024)
Rationale: Acute caustic ingestion from suicidal intent is not usual in emergency departments in developed countries. One of the substances commonly ingested by suicidal patients, phosphoric acid, tends to cause multi-system derangements. Patient’s
Externí odkaz:
https://doaj.org/article/a0f12191d68b49eda2df7c4b7676c471
Publikováno v:
Proceedings of Singapore Healthcare, Vol 33 (2024)
Background Simulation training, an important component of the Emergency Medicine (EM) training curriculum, was affected by the COVID-19 pandemic due to social distancing policies. As a result, there was a need to find alternative approaches to medica
Externí odkaz:
https://doaj.org/article/9211a80fb3ac43b6882b786ba6287b05