Results 11 to 20 of about 432,756 (308)
Microscopic realizations of the trap model [PDF]
Journal of Physics A: Mathematical and General, 2004 Monte Carlo optimizations of Number Partitioning and of Diophantine approximations are microscopic realizations of `Trap Model' dynamics. This offers a fresh look at the physics behind this model, and points at other situations in which it may apply.
Junier, Ivan, Kurchan, Jorge
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Microscopic computational model of a superfluid [PDF]
The Journal of Chemical Physics, 2010 A finite one-dimensional microscopic model of a superfulid is presented. The model consists of interacting Bose particles with an additional impurity particle confined to a ring. Both semiclassical and exact quantum calculations reveal dissipationless motion of impurity with increased effective mass due to its interaction with the excitations of Bose ...
Ovchinnikov, Mikhail, Novikov, Alexey
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Multiferroic, Phonon and Optical Properties of Pure and Ion-Doped YFeO3 Nanoparticles
Nanomaterials, 2021 The magnetic, electric, phonon and optical properties of pure and ion-doped orthorhombic YFeO3 nanoparticles are studied for the first time theoretically. The spontaneous magnetization Ms in YFeO3 decreases with decreasing particle size. Ms is also shape
Angel Apostolov +2 more
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Origin of Multiferroism of β-NaFeO2
Magnetochemistry, 2022 The multiferroic β-NaFeO2 is theoretically investigated for the first time using a microscopic model and Green’s function technique. A small room-temperature ferromagnetism is observed, which could be explained by canting of the antiferromagnetic ...
Iliana Naumova Apostolova +2 more
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An Experiment-Based Study of Formation Damage Using a Microetching Model Displacement Method
Micromachines, 2022 In the field of oil and gas exploration, drilling fluid is regarded as the essential “blood” for drilling, which mainly helps to control the formation pressure and remove cuttings from the well.
Feng Wu +7 more
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Magnetization, Band Gap and Specific Heat of Pure and Ion Doped MnFe2O4 Nanoparticles
Magnetochemistry, 2023 We have studied the magnetic properties of ion doped MnFe2O4 nanoparticles with the help of a modified Heisenberg model and Green’s function theory taking into account all correlation functions.
I. N. Apostolova +2 more
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Learning Low-Dimensional Models of Microscopes [PDF]
IEEE Transactions on Computational Imaging, 2021 We propose accurate and computationally efficient procedures to calibrate fluorescence microscopes from micro-beads images. The designed algorithms present many original features. First, they allow to estimate space-varying blurs, which is a critical feature for large fields of views.
Valentin Debarnot +3 more
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Magnetoelectric Coupling Effects in Tb-Doped BiFeO3 Nanoparticles
Magnetochemistry, 2023 The magnetic, electric, and optical properties in Tb-doped BiFeO3 nanoparticles as functions of size and doping concentrations were investigated using a microscopic model, taking into account both linear and quadratic magnetoelectric (ME) coupling.
Iliana Apostolova +2 more
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Microscopic evidence for the topological transition in model vitrimers [PDF]
, 2023 In addition to the glass transition, vitrimers undergo a topological transition from viscoelastic liquid to viscoelastic solid behavior when the network rearrangements facilitated by dynamic bond exchange reactions freeze.
Arbe, Arantxa +8 more
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A microscopic model for Josephson currents [PDF]
Journal of Physics A: Mathematical and General, 2004 A microscopic model of a Josephson junction between two superconducting plates is proposed and analysed. For this model, the nonequilibrium steady state of the total system is explicitly constructed and its properties are analysed. In particular, the Josephson current is rigorously computed as a function of the phase difference of the two plates and ...
Lauwers, J., Verbeure, A.
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