Results 71 to 80 of about 43,905 (182)

Dissociation energy of the water dimer from Quantum Monte Carlo calculations

open access: yes, 2007
We report a study of the electronic dissociation energy of the water dimer using quantum Monte Carlo (QMC) techniques. We have performed variational quantum Monte Carlo (VMC) and diffusion quantum Monte Carlo (DMC) calculations of the electronic ground ...
Gurtubay, I. G., Needs, R. J.
core   +1 more source

Microscopic calculation of the phonon-roton branch in superfluid $^4$He

open access: yes, 1996
Diffusion Monte Carlo results for the phonon-roton excitation branch in bulk liquid $^4$He at zero temperature are presented. The sign problem associated to the excited wave function has been dealt both with the fixed-node approximation and the released ...
Bogoliubov N. N.   +6 more
core   +2 more sources

3D Simulation of Electron and Ion Transmission of GEM-based Detectors

open access: yes, 2017
Time Projection Chamber (TPC) has been chosen as the main tracking system in several high-flux and high repetition rate experiments. These include on-going experiments such as ALICE and future experiments such as PANDA at FAIR and ILC. Different $\mathrm{
Bhattacharya, Purba   +4 more
core   +1 more source

Diffusion quantum Monte Carlo calculation of the quasiparticle effective mass of the two-dimensional homogeneous electron gas [PDF]

open access: yes, 2012
The quasiparticle effective mass is a key quantity in the physics of electron gases, describing the renormalization of the electron mass due to electron-electron interactions.
Drummond, N. D., Needs, R. J.
core   +2 more sources

Computed tomography detected pyelovenous backflow associated with complete ureteral obstruction

open access: yesIJU Case Reports, 2019
Introduction Pyelovenous backflow is a rare condition resulting from an increase in pressure in the renal pelvis due to urinary obstruction. Case presentation A 49‐year‐old woman developed high‐grade fever and right‐sided hydronephrosis after undergoing ...
Takeshi Sano   +6 more
doaj   +1 more source

Equivalence between non-Markovian dynamics and correlation backflows

open access: yesNew Journal of Physics, 2020
The information encoded into an open quantum system that evolves under a Markovian dynamics is always monotonically non-increasing. Nonetheless, for a given quantifier of the information contained in the system, it is in general not clear if for all non ...
Dario De Santis, Markus Johansson
doaj   +1 more source

Ion backflow studies with a triple-GEM stack with increasing hole pitch

open access: yes, 2018
Gas Electron Multipliers have undergone a very consistent development since their invention in 1997. Their production procedures have been tuned in such a way that nowadays it is possible to produce foils with areas of the order of the square meter that ...
Bhattacharya, P.   +3 more
core   +1 more source

Interface enhancement of Gilbert damping from first-principles [PDF]

open access: yes, 2014
The enhancement of Gilbert damping observed for Ni80Fe20 (Py) films in contact with the non-magnetic metals Cu, Pd, Ta and Pt, is quantitatively reproduced using first-principles scattering theory.
Kelly, Paul J.   +4 more
core   +3 more sources

Flow Characteristics and Loss Mechanism of Tip Leakage Flow in Mining Contra-Rotating Axial Flow Fan

open access: yesApplied Sciences
Tip leakage flow interacts with the mainstream, impacting the energy transmission process within the impeller of the fan and causing a significant flow loss.
Yongping Chen   +3 more
doaj   +1 more source

Development of microactuators driven by liquid crystals (6th report, control of driving direction)

open access: yesNihon Kikai Gakkai ronbunshu, 2015
We have developed liquid crystalline microactuators which can drive in two or four ways. These actuators consist simply of two glass plates on which patterned electrodes and alignment layers have been treated.
Tomohiro TSUJI, Shigeomi CHONO
doaj   +1 more source

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