Results 81 to 90 of about 2,455,001 (344)

Effective low-energy description of almost Ising-Heisenberg diamond chain

, 2015
We consider a geometrically frustrated spin-1/2 Ising-Heisenberg diamond chain, which is an exactly solvable model when assuming part of the exchange interactions as Heisenberg ones and another part as Ising ones.
Derzhko, Oleg, Krupnitska, Olesia, Lisnyi, Bohdan, Strecka, Jozef   +3 more
core   +1 more source

Effects of Pharmacologic and Nonpharmacologic Interventions for the Management of Sleep Problems in People With Fibromyalgia: Systematic Review and Network Meta‐Analysis of Randomized Controlled Trials

Arthritis Care &Research, EarlyView.
Objective Fibromyalgia is a chronic condition characterized by widespread musculoskeletal pain and fatigue. Almost everyone with fibromyalgia has sleep problems. We aimed to evaluate the effectiveness and safety of current interventions for the management of fibromyalgia‐related sleep problems.
Jemma Hudson, Mari Imamura, Clare Robertson, Daniel Whibley, Lorna Aucott, Katie Gillies, Paul Manson, Debra Dulake, Abhishek Abhishek, Nicole K. Y. Tang, Gary J. Macfarlane, Miriam Brazzelli   +11 more
wiley   +1 more source

Free field realization of the BMS Ising model

Journal of High Energy Physics, 2023
In this work, we study the inhomogeneous BMS free fermion theory, and show that it gives a free field realization of the BMS Ising model. We find that besides the BMS symmetry there exists an anisotropic scaling symmetry in BMS free fermion theory.
Zhe-fei Yu, Bin Chen
doaj   +1 more source

Thermal Operators in Ising Percolation

, 1999
We discuss a new cluster representation for the internal energy and the specific heat of the d-dimensional Ising model, obtained by studying the percolation mapping of an Ising model with an arbitrary set of antiferromagnetic links. Such a representation
Coniglio A, de Candia A, de Candia A, de Candia A, de Candia A, F Gliozzi, For a review on percolation theory see Stauffer D, Fortuin C M, Hasenbusch M, M Caselle, Stanley H E   +10 more
core   +1 more source

Assessing the Significance of Model Selection in Ecology [PDF]

arXiv, 2020
Model Selection is a key part of many ecological studies, with Akaike's Information Criterion the most commonly used technique. Typically, a number of candidate models are defined a priori and ranked according to their expected out-of-sample performance.
arxiv  

Some Recent Results on Pair Correlation Functions and Susceptibilities in Exactly Solvable Models

, 2006
Using detailed exact results on pair-correlation functions of Z-invariant Ising models, we can write and run algorithms of polynomial complexity to obtain wavevector-dependent susceptibilities for a variety of Ising systems.
Au-Yang H, Au-Yang H, Au-Yang H, Au-Yang H, Au-Yang H, Baxter R J, Baxter R J, Caselle M, Gummelt P, Helen Au-Yang, Jacques H H Perk, Jin B-Q, Kong X-P   +12 more
core   +1 more source

Modeling and Accessing Smart Materials with Integrity Constraints in the Shapes Constraint Language and Ontologies—The SmaDi Way

Advanced Engineering Materials, Volume 27, Issue 8, April 2025.
Integrity constraints enforce consistency and completeness on data. The article discusses a newly developed validator for checking integrity constraints in Shapes Constraint Language (SHACL) through reduction to SPARQL Protocol and RDF Query Language (SPARQL) queries. It can be used with systems for ontology‐based database access.
Özgür L. Özçep, Mena Leemhuis, Maximilian Winkler, Robert Courant, Thomas Sattel, Jürgen Maas   +5 more
wiley   +1 more source

Phase diagrams of lattice models on Cayley tree and chandelier network: a review

Condensed Matter Physics, 2022
The main purpose of this review paper is to give systematically all the known results on phase diagrams corresponding to lattice models (Ising and Potts) on Cayley tree (or Bethe lattice) and chandelier networks.
H. Akιn
doaj   +1 more source

On the Structure of Ordered Latent Trait Models [PDF]

arXiv, 2019
Ordered item response models that are in common use can be divided into three groups, cumulative, sequential and adjacent categories model. The derivation and motivation of the models is typically based on the assumed presence of latent traits or underlying process models. In the construction frequently binary models play an important role.
arxiv  

Ising Model on Edge-Dual of Random Networks

, 2004
We consider Ising model on edge-dual of uncorrelated random networks with arbitrary degree distribution. These networks have a finite clustering in the thermodynamic limit.
A. Ramezanpour, B. Bollobas, L. A. N. Amaral, R. J. Baxter, S. N. Dorogovtsev   +4 more
core   +1 more source