Results 111 to 120 of about 24,146,027 (328)
Gaps in the Heisenberg-Ising model [PDF]
Physical Review B, 1995 We report on the closing of gaps in the ground state of the critical Heisenberg-Ising chain at momentum $π$. For half-filling, the gap closes at special values of the anisotropy $Δ= \cos(π/Q)$, $Q$ integer. We explain this behavior with the help of the Bethe Ansatz and show that the gap scales as a power of the system size with variable exponent ...
Roemer, R. A. +2 more
openaire +3 more sources
Bioinspired Shape‐Memory Hook Fasteners With Programmable Interlocking and Silent Release
Advanced Engineering Materials, EarlyView.Bioinspired hook fasteners made from epoxy shape‐memory polymers are shown to switch between strong, secure attachment and gentle, silent release when heated. By combining programmable geometry and material response, these adaptive fasteners outperform commercial systems in strength and noise control, enabling new solutions for robotics, medical ...
Maria I. Vallejo Ciro +3 more
wiley +1 more source
Exact solutions to plaquette Ising models with free and periodic boundaries
Nuclear Physics B, 2017 An anisotropic limit of the 3d plaquette Ising model, in which the plaquette couplings in one direction were set to zero, was solved for free boundary conditions by Suzuki (1972) [1], who later dubbed it the fuki-nuke, or “no-ceiling”, model.
Marco Mueller +2 more
doaj +1 more source
Probing Strong Correlations with Light Scattering: the Example of the Quantum Ising model
, 2016 In this paper we calculate the nonlinear susceptibility and the resonant Raman cross section for the paramagnetic phase of the ferromagnetic Quantum Ising model in one dimension. In this region the spectrum of the Ising model has a gap $m$.
Babujian, H. M. +2 more
core +1 more source
Nondestructive Testing of Welded Composite Metal Foams
Advanced Engineering Materials, EarlyView.X‐ray computed tomography (CT) is used to evaluate welded steel–steel composite metal foam (CMF) joints of two density classes. It reports variation in postweld spatial void distribution and correlates it to weld‐induced changes, mechanical performance, and failure within welded CMF panels.
Chinmaya Prerana Inguva +2 more
wiley +1 more source
Toward Practical Benchmarks of Ising Machines: A Case Study on the Quadratic Knapsack Problem
IEEE AccessCombinatorial optimization has wide applications from industry to natural science. Ising machines bring an emerging computing paradigm for efficiently solving a combinatorial optimization problem by searching a ground state of a given Ising model ...
Kentaro Ohno +2 more
doaj +1 more source
Surface Reconstruction: Noble Metals
Успехи физики металлов, 2001 The paper reviews the most important achievements in the study of the surface-reconstruction phase transition on the low-index single crystals of Pt, Ir, and Au.
M. O. Vasyl'yev, A. B. Bondarchuk, V. A. Tinkov
doaj +1 more source
, 2012 The fractal dimensions and the percolation exponents of the geometrical spin clusters of like sign at criticality, are obtained numerically for an Ising model with temperature-dependent annealed bond dilution, also known as the thermalized bond Ising ...
Davatolhagh, S. +2 more
core +1 more source
3D‐Printed Sulfur‐Derived Polymers With Controlled Architectures for Lithium‐Sulfur Batteries
Advanced Functional Materials, EarlyView.Rheology‐guided formulation design for direct ink writing enables the fabrication of 3D sulfur copolymer cathodes with controlled architectures for lithium‐sulfur batteries. The printed electrodes exhibit multiscale porosity and high sulfur utilization, delivering enhanced electrochemical performance compared to conventional cast electrodes.
Bin Ling +7 more
wiley +1 more source
Ising model as Wilson-Majorana fermions
Nuclear Physics B, 2020 We show the equivalence of the 2D Ising model to standard free Euclidean lattice fermions of the Wilson Majorana type. The equality of the loop representations for the partition functions of both systems is established exactly for finite lattices with ...
Ulli Wolff
doaj +1 more source