Results 11 to 20 of about 590,994 (248)

Density-dependent tunneling in the extended Bose–Hubbard model

open access: yesNew Journal of Physics, 2013
Recently, it has become apparent that when the interactions between polar molecules in optical lattices become strong, the conventional description using the extended Hubbard model has to be modified by additional terms, in particular a density-dependent
Michał Maik   +4 more
doaj   +1 more source

Phases of the Bose–Einstein Condensate Dark Matter Model with Both Two- and Three-Particle Interactions

open access: yesUniverse, 2021
In this paper, we further elaborate on the Bose–Einstein condensate (BEC) dark matter model extended in our previous work [Phys. Rev. D 2020, 102, 083510] by the inclusion of sixth-order (or three-particle) repulsive self-interaction term.
Alexandre M. Gavrilik   +1 more
doaj   +1 more source

Photocontrollable Mixed-Valent States in Platinum-Halide Ladder Compounds

open access: yesApplied Sciences, 2018
Employing a two-orbital extended Peierls⁻Hubbard model, we demonstrate the photomanipulation of mixed-valent states in platinum-halide ladder compounds. There are two types of interchain valence arrangements, namely in-phase and out-of-phase types.
Jun Ohara, Shoji Yamamoto
doaj   +1 more source

Vortex confinement transitions in the modified Goldstone model

open access: yesPhysical Review Research, 2020
The modified XY model is a variation of the XY model extended by a half-period term, exhibiting a rich phase structure. As the Goldstone model, also known as the linear O(2) model, can be obtained as a continuum and regular model for the XY model, we ...
Michikazu Kobayashi   +3 more
doaj   +1 more source

Development of a prediction model relating the two-phase pressure drop in a moisture separator using an air/water test facility

open access: yesNuclear Engineering and Technology, 2021
The pressure drop of a moisture separator in a steam generator is the important design parameter to ensure the successful performance of a nuclear power plant.
Kihwan Kim   +4 more
doaj   +1 more source

Using Multi-Conditional Minimum Thresholds in Temporal Fuzzy Utility Mining

open access: yesInternational Journal of Computational Intelligence Systems, 2019
In the field of fuzzy utility mining, the characteristics of transaction time have been a widely studied topic in data mining. However, using a single-conditional threshold for all items does not suffice to reflect the true properties of items.
Wei-Ming Huang   +3 more
doaj   +1 more source

The space-time conservation element and solution element scheme for simulating two-phase flow in pipes

open access: yesAdvances in Mechanical Engineering, 2019
In this article, the space-time conservation element and solution element scheme is extended to simulate the unsteady compressible two-phase flow in pipes.
Rana Danish Aslam   +3 more
doaj   +1 more source

Z_{Q} Berry phase for higher-order symmetry-protected topological phases

open access: yesPhysical Review Research, 2020
We propose the Z_{Q} Berry phase as a topological invariant for higher-order symmetry-protected topological (HOSPT) phases for two- and three-dimensional systems. It is topologically stable for electron-electron interactions assuming the gap remains open.
Hiromu Araki   +2 more
doaj   +1 more source

The Effect of Disorder on the Phase Diagrams of Hard-Core Lattice Bosons With Cavity-Mediated Long-Range and Nearest-Neighbor Interactions

open access: yesFrontiers in Physics, 2020
We use quantum Monte Carlo simulations with the worm algorithm to study the phase diagram of a two-dimensional Bose-Hubbard model with cavity-mediated long-range interactions and uncorrelated disorder in the hard-core limit. Our study shows the system is
Chao Zhang, Heiko Rieger
doaj   +1 more source

Effects of Microstructure Characteristics of Cortical Bone on its Microcrack Propagation [PDF]

open access: yesE3S Web of Conferences, 2020
Scanning electron microscope (SEM) was used to observe and analyze the microstructure of the cross section of cortical bone. The observation results illustrated that the cortical bone is composed of cylindrical osteons and interstitial bone between ...
Liu Yu-xi, Li Ai-hua, Li Yan-hua
doaj   +1 more source

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