Results 61 to 70 of about 2,455,001 (344)

Rigorous Solution of the Spin-1 Quantum Ising Model with Single-ion Anisotropy

, 2008
We solve the spin-1 quantum Ising model with single-ion anisotropy by mapping it onto a series of segmented spin-1/2 transverse Ising chains, separated by the $S^z =0$ states called holes.
Dai, Jianhui, Xiang, Tao, Yang, Liping, Yang, Zhihua   +3 more
core   +1 more source

Roughening and preroughening in the six vertex model with an extended range of interaction [PDF]

, 1995
We study the phase diagram of the BCSOS model with an extended interaction range using transfer matrix techniques, pertaining to the (100) surface of single component fcc and bcc crystals.
Bastiaansen, Paul J. M., Knops, Hubert J. F.   +1 more
core   +2 more sources

Blood exosome connexins and small RNAs related to demyelinating disease activity

Annals of Clinical and Translational Neurology, Volume 12, Issue 3, Page 538-555, March 2025.
Abstract Objectives To assess blood exosome (Ex)‐connexin (Cx)43 (encoded by GJA1) and its truncated isoforms in multiple sclerosis (MS) and neuromyelitis optica spectrum disorder (NMOSD), which show distinct alterations in astroglial Cx43. Methods Serum Exs from 48 patients with MS (34 relapsing–remitting, 14 secondary‐progressive), 35 with NMOSD, 20 ...
Guzailiayi Maimaitijiang, Jun‐ichi Kira, Yuri Nakamura, Mitsuru Watanabe, Ezgi Ozdemir Takase, Satoshi Nagata, Ayako Sakoda, Xu Zhang, Katsuhisa Masaki, Ryo Yamasaki, Noriko Isobe, Hiroo Yamaguchi, Tomohiro Imamura   +12 more
wiley   +1 more source

A GPU-Based Ising Machine With a Multi-Spin-Flip Capability for Constrained Combinatorial Optimization

IEEE Access
Ising machines are domain-specific computers that solve combinatorial optimization problems (COPs). They utilize an Ising model to represent a COP and search for the optimal spin configuration of the Ising model to solve the COP.
Satoru Jimbo, Tatsuhiko Shirai, Nozomu Togawa, Masato Motomura, Kazushi Kawamura   +4 more
doaj   +1 more source

Quantum correlations in the Kerr Ising model

New Journal of Physics, 2020
In this article we present a full description of the quantum Kerr Ising model—a linear optical network of parametrically pumped Kerr nonlinearities. We consider the non-dissipative Kerr Ising model and, using variational techniques, show that the energy ...
M J Kewming, S Shrapnel, G J Milburn
doaj   +1 more source

Finite-size scaling of the majority-voter model above the upper critical dimension

Condensed Matter Physics, 2023
The majority-voter model is studied by Monte Carlo simulations on hypercubic lattices of dimension d = 2 to 7 with periodic boundary conditions. The critical exponents associated to the finite-size scaling of the magnetic susceptibility are shown to be ...
C. Chatelain
doaj   +1 more source

The critical Z-invariant Ising model via dimers: the periodic case

, 2008
We study a large class of critical two-dimensional Ising models namely critical Z-invariant Ising models on periodic graphs, example of which are the classical square, triangular and honeycomb lattice at the critical temperature.
Boutillier, Cédric, de Tilière, Béatrice   +1 more
core   +2 more sources

The Ising model and planar N=4 Yang-Mills [PDF]

, 2007
The scattering-matrix for planar Yang-Mills with N=4 supersymmetry relies on the assumption that integrability holds to all orders in perturbation theory.
Arutyunov G, Arutyunov G, Baxter R J, Beisert N, Beisert N, Beisert N, Beisert N, Beisert N, Beisert N, Chen H Y, César Gómez, Gómez C, Hernández R, Johan Gunnesson, Klose T, Klose T, Kotikov A V, Minahan J A, Polyakov A M, Rafael Hernández, Rej A, Staudacher M, Young C A S   +22 more
core   +5 more sources

Early Language Impairment as an Integral Part of the Cognitive Phenotype in Huntington's Disease

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Huntington's disease (HD) speech/language disorders have typically been attributed to motor and executive impairment due to striatal dysfunction. In‐depth study of linguistic skills and the role of extrastriatal structures in HD is scarce.
Arnau Puig‐Davi, Carla Franch‐Marti, Iñigo Ruiz‐Barrio, Frederic Sampedro, Jesus Perez‐Perez, Jordi A. Matias‐Guiu, Fernando Cuetos, Gonzalo Olmedo‐Saura, Laura Perez‐Carasol, Andrea Horta‐Barba, Ignacio Aracil‐Bolaños, Javier Pagonabarraga, Jaime Kulisevsky, Saul Martinez‐Horta   +13 more
wiley   +1 more source

Trust the Model When It Is Confident: Masked Model-based Actor-Critic [PDF]

arXiv, 2020
It is a popular belief that model-based Reinforcement Learning (RL) is more sample efficient than model-free RL, but in practice, it is not always true due to overweighed model errors. In complex and noisy settings, model-based RL tends to have trouble using the model if it does not know when to trust the model.
arxiv