Results 31 to 40 of about 615,680 (330)

Effect of adiabatic heating on microstructure evolution in Ti-6Al-4V during high strain rate forging [PDF]

open access: yesMATEC Web of Conferences, 2020
The effect of adiabatic heating on microstructure evolution during high strain rate subtransus forging of a Ti-6Al-4V alloy having equiaxed initial microstructure was studied through experiments and modelling.
Kulakov Mykola   +2 more
doaj   +1 more source

Engineering fast and stable splitting of matter waves [PDF]

open access: yes, 2012
When attempting to split coherent cold atom clouds or a Bose-Einstein condensate (BEC) by bifurcation of the trap into a double well, slow adiabatic following is unstable with respect to any slight asymmetry, and the wave "collapses" to the lower well ...
Chen, Xi   +4 more
core   +2 more sources

Shortcuts to adiabatic holonomic quantum computation in decoherence-free subspace with transitionless quantum driving algorithm

open access: yesNew Journal of Physics, 2016
By using transitionless quantum driving algorithm (TQDA), we present an efficient scheme for the shortcuts to the holonomic quantum computation (HQC). It works in decoherence-free subspace (DFS) and the adiabatic process can be speeded up in the shortest
Xue-Ke Song   +4 more
doaj   +1 more source

Spatial adiabatic passage processes in sonic crystals with linear defects [PDF]

open access: yesPhys. Rev. B 89, 094304 (2014), 2014
We investigate spatial adiabatic passage processes for sound waves propagation in sonic crystals, consisting of steel cylinders embedded in a water host medium, that present two linear defects. This work constitutes an extension of the well-known quantum optical rapid adiabatic passage technique to the field of sound propagation.
arxiv   +1 more source

Second Law Violation By Magneto-Caloric Effect Adiabatic Phase Transition of Type I Superconductive Particles

open access: yesEntropy, 2004
: The nature of the thermodynamic behavior of Type I superconductor particles, having a cross section less than the Ginzburg-Landau temperature dependent coherence length is discussed for magnetic field induced adiabatic phase transitions from the ...
Peter Keefe
doaj   +1 more source

Non-abelian superconducting pumps [PDF]

open access: yes, 2008
Cooper pair pumping is a coherent process. We derive a general expression for the adiabatic pumped charge in superconducting nanocircuits in the presence of level degeneracy and relate it to non-Abelian holonomies of Wilczek and Zee.
Brosco, Valentina   +3 more
core   +5 more sources

Magnetic nanoparticles hyperthermia in a non-adiabatic and radiating process

open access: yesScientific Reports, 2021
We investigate the magnetic nanoparticles hyperthermia in a non-adiabatic and radiating process through the calorimetric method. Specifically, we propose a theoretical approach to magnetic hyperthermia from a thermodynamic point of view.
C. A. M. Iglesias   +16 more
doaj   +1 more source

Effect of Nonlinearity on Adiabatic Evolution of Light [PDF]

open access: yes, 2008
We investigate the effect of nonlinearity in a system described by an adiabatically evolving Hamiltonian. Experiments are conducted in a three-core waveguide structure that is adiabatically varying with distance, in analogy to the stimulated Raman ...
Christodoulides, DN   +5 more
core   +2 more sources

Natural convection of rectangular cavity enhanced by obstacle and fin to simulate phase change material melting process using Lattice Boltzmann method

open access: yesAlexandria Engineering Journal, 2023
In recent years, the lattice Boltzmann method has become a powerful method for computational modeling of various complex fluid flow concerns, including the simulation of the melting process in phase change materials.
Gongxing Yan   +6 more
doaj  

Multi-spin counter-diabatic driving in many-body quantum Otto refrigerators [PDF]

open access: yesQuantum, 2020
Quantum refrigerators pump heat from a cold to a hot reservoir. In the few-particle regime, counter-diabatic (CD) driving of, originally adiabatic, work-exchange strokes is a promising candidate to overcome the bottleneck of vanishing cooling power. Here,
Andreas Hartmann   +4 more
doaj   +1 more source

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