Results 11 to 20 of about 202,217 (330)

Characterization and Synthesis of Silver Nanostructures in Rare Earth Activated GeO2-PbO Glass Matrix Using Matrix Adjustment Thermal Reduction Method [PDF]

open access: yesEntropy, 2013
This paper reports matrix adjustment thermal reduction method to synthesize silver nanostructures in Er3+/Yb3+ activated GeO2-PbO glass matrix. The GeO2-PbO glass, the medium of nanoparticle formation, doped with Er2O3, Yb2O3 and AgNO3 was prepared by a ...
Hj. A. A. Sidek   +4 more
doaj   +6 more sources

Population annealing: Theory and application in spin glasses [PDF]

open access: yesPhysical Review E, 2015
Population annealing is an efficient sequential Monte Carlo algorithm for simulating equilibrium states of systems with rough free energy landscapes. The theory of population annealing is presented, and systematic and statistical errors are discussed.
Wenlong Wang   +3 more
openaire   +8 more sources

Theory of Quantum Annealing of an Ising Spin Glass [PDF]

open access: yesScience, 2002
Probing the lowest energy configuration of a complex system by quantum annealing was recently found to be more effective than its classical, thermal counterpart. By comparing classical and quantum Monte Carlo annealing protocols on the two-dimensional random Ising model (a prototype spin glass), we confirm the superiority of quantum annealing relative ...
Roman Martonak   +4 more
openaire   +6 more sources

Possible ergodic-nonergodic regions in the quantum Sherrington-Kirkpatrick spin glass model and quantum annealing [PDF]

open access: green, 2018
We explore the behavior of order parameter distribution of quantum Sherrington-Kirkpatrick model in the spin glass phase using Monte Carlo technique for the effective Suzuki-Trotter Hamil- tonian at finite temperatures and that at zero temperature ...
Sudip Mukherjee   +2 more
openalex   +3 more sources

Dual time scales in simulated annealing of a two-dimensional Ising spin glass [PDF]

open access: hybrid, 2017
We apply a generalized Kibble-Zurek out-of-equilibrium scaling ansatz to simulated annealing when approaching the spin-glass transition at temperature $T=0$ of the two-dimensional Ising model with random $J= \pm 1$ couplings.
Shanon J. Rubin   +2 more
openalex   +4 more sources

The influence of the annealing mode on stress elimination in a foam glass structure [PDF]

open access: yesJournal of the Serbian Chemical Society, 2021
The purpose of this work was to establish the influence of features of the annealing mode on the value of residual stresses in the structure of porous inorganic materials using foam glass as an example.
Grushko Irina
doaj   +1 more source

Effects of Annealing on Enthalpy Recovery and Nanomechanical Behaviors of a La-Based Bulk Metallic Glass

open access: yesMetals, 2021
Structural relaxation and nanomechanical behaviors of La65Al14Ni5Co5Cu9.2Ag1.8 bulk metallic glass (BMG) with a low glass transition temperature during annealing have been investigated by calorimetry and nanoindentation measurement.
Ting Shi, Lanping Huang, Song Li
doaj   +1 more source

Constrained Annealing for Spin Glasses [PDF]

open access: yesJournal de Physique I, 1995
The quenched free energy of spin glasses is estimated by means of annealed averages where the frustration is constrained to its average value. We discuss the case of d-dimensional Ising models with random nearest neighbour coupling, and we introduce a new method to obtain constrained annealed averages without recurring to Lagrange multipliers.
Paladin G, Pasquini M, SERVA, Maurizio
openaire   +5 more sources

Partial annealing of a coupled mean-field spin-glass model with an embedded pattern [PDF]

open access: yes, 2010
A partially annealed mean-field spin-glass model with a locally embedded pattern is studied. The model consists of two dynamical variables, spins and interactions, that are in contact with thermal baths at temperatures T_S and T_J, respectively.
Ayaka Sakata   +4 more
core   +4 more sources

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