Results 71 to 80 of about 180,621 (313)

Energy-Momentum Tensor of Particles Created in an Expanding Universe [PDF]

open access: yes, 1999
We present a general formulation of the time-dependent initial value problem for a quantum scalar field of arbitrary mass and curvature coupling in a FRW cosmological model.
A. Vilenkin   +79 more
core   +2 more sources

Siloxane‐Functionalized Silicon Phthalocyanine OTFTs: High Hole Mobility and Unexpected p‐Type Character

open access: yesAdvanced Functional Materials, EarlyView.
In this paper, the first use of a siloxane‐substituted silicon phthalocyanine (iso(Si3O)2SiPc) in OTFTs is reported. Moreover, this compound displays the highest hole mobility (exceeding 1 cm2 V−1 s−1) ever recorded for SiPc, and the GIWAXS study reveals thin films with an exceptionally uniform crystalline texture.
Nicolas Ledos   +5 more
wiley   +1 more source

Temporal Quasi-Phase Matching Assists Robust Acoustic Adiabatic Passage

open access: yesResearch
Recent work demonstrated stimulated Raman adiabatic passage-type transfer of energy along 3 acoustic cavities. After brief comments on the stimulated Raman adiabatic passage method, remarks on the scientific and technological relevance of this work are ...
Klaas Bergmann
doaj   +1 more source

QUBO formulations for training machine learning models

open access: yesScientific Reports, 2021
Training machine learning models on classical computers is usually a time and compute intensive process. With Moore’s law nearing its inevitable end and an ever-increasing demand for large-scale data analysis using machine learning, we must leverage non ...
Prasanna Date   +2 more
doaj   +1 more source

Adiabatic theorem for classical stochastic processes [PDF]

open access: greenJournal of Physics A: Mathematical and Theoretical
Abstract We apply adiabatic theorems developed for quantum mechanics to stochastic annealing processes described by the classical master equation with a time-dependent generator. When the instantaneous stationary state is unique and the minimum decay rate g is nonzero, the time-evolved state is basically relaxed to the instantaneous ...
Kazutaka Takahashi
openalex   +3 more sources

Strain‐Activated Photo‐Dehalogenation Unlocks Low‐Energy One and Two‐Photon 3D Microfabrication

open access: yesAdvanced Functional Materials, EarlyView.
5,14‐NMI‐Cz acts, conversely to its 7,10‐NMI‐Cz(7,10‐'dibromo‐2‐(2,6‐diisopropylphenyl)‐1H‐benzo[lmn]carbazolo[9,1‐bc][2,8]phenanthroline‐1,3(2H)‐dione) counterpart, as modular photoinitiator with panchromatic photoactivity, featuring a weak C–Br bond from geometric strain for efficient Type I & II initiation. These studies demonstrate applicability of
Kacper Piskorz   +10 more
wiley   +1 more source

Quantum heat engine based on quantum interferometry: The SU(1,1) Otto cycle

open access: yesPhysical Review Research
We present a quantum heat engine based on a quantum Otto cycle whose working substance reproduces the same outcomes as an SU(1,1) interference process at the end of each adiabatic transformation.
Alessandro Ferreri   +4 more
doaj   +1 more source

Driving three atoms into a singlet state in an optical cavity via adiabatic passage of a dark state

open access: yes, 2012
In this paper, we propose an efficient scheme to drive three atoms in an optical cavity into a singlet state via adiabatic passage. Appropriate Rabi frequencies of the classical fields are selected to realize the present scheme.
Lu, Mei   +3 more
core   +1 more source

Entanglement in Spatial Adiabatic Processes for Interacting Atoms [PDF]

open access: yesFew-Body Systems, 2018
9 pages, 3 ...
Albert Benseny   +2 more
openaire   +4 more sources

Computational Modeling of Reticular Materials: The Past, the Present, and the Future

open access: yesAdvanced Materials, EarlyView.
Reticular materials are advanced materials with applications in emerging technologies. A thorough understanding of material properties at operating conditions is critical to accelerate the deployment at an industrial scale. Herein, the status of computational modeling of reticular materials is reviewed, supplemented with topical examples highlighting ...
Wim Temmerman   +3 more
wiley   +1 more source

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