Results 91 to 100 of about 3,745 (283)

Dynamics of Quantum Averages and Quantization Condition.

open access: yes, 1996
: The system of ODE, which describes dynamics of quantum averages of operators of coordinate, momentum and second moments in semiclassical approximation is considered (average values are calculated w.r.t.
Kondrat'eva M.F.
core  

Dirac operator coupled to bosons

open access: yes, 2016
We consider a model of point-like interaction between electrons and bosons in a cavity. The electrons are relativistic and are described by a Dirac operator on a bounded interval while the bosons are treated by second quantization.
Boitsev, Anton Aleksandrovich   +2 more
core   +1 more source

The multi-configurational time-dependent Hartree approach in optimized second quantization: Imaginary time propagation and particle number conservation.

open access: yes, 2020
Weike T, Manthe U. The multi-configurational time-dependent Hartree approach in optimized second quantization: Imaginary time propagation and particle number conservation. The Journal of chemical physics.
Weike, Thomas   +3 more
core   +1 more source

Molecularly Engineered Wing‐Shaped Azobenzene Memristors for Logic‐in‐Memory and Edge Visual Intelligence

open access: yesAdvanced Science, EarlyView.
Rational engineering of terminal substituents in symmetric azobenzene‐based molecules enables precise control over conformationally coupled charge‐transfer processes. This design yields tunable nonvolatile resistive memory behaviors, ranging from write‐once‐read‐many‐times (WORM) to rewritable switching.
Yanze Liu   +11 more
wiley   +1 more source

Geometric Quantization

open access: yes
peer reviewedGeometric quantization is a geometric way to quantize symplectic manifolds. Its definition and properties are presented. Symplectic manifolds are called quantizable if there exists a hermitian line bundle with a compatible connection such ...
SCHLICHENMAIER, Martin
core   +1 more source

Conformal Reconfigurable Intelligent Surfaces: A Cylindrical Geometry Perspective

open access: yesAdvanced Electronic Materials, EarlyView.
Cylindrical reconfigurable intelligent surfaces are explored for low‐complexity beam steering using one‐bit meta‐atoms. A multi‐level modeling approach, including optimization‐based synthesis, demonstrates that even minimal hardware can support directive scattering.
Filippo Pepe   +4 more
wiley   +1 more source

Limiting absorption principle for the second quantization of self-adjoint operators

open access: yesHokkaido Mathematical Journal, 2010
In this paper we discuss the limiting absorption principle (l.a.p.) of the second quantization of semi-bounded self-adjoint operators. We show that the l.a.p. for a self-adjoint operator on a basic Hilbert space $\mathcal{H}$ is ``inherited'' to the one for its second quantization on a Fock space $\mathcal{F}(\mathcal{H})$.
openaire   +2 more sources

Relativistic Quantization and Improved Equation for a Free Relativistic Particle

open access: yes, 1995
Usually the only difference between relativistic quantization and standard one is that the Lagrangian of the system under consideration should be Lorentz invariant.
Kisil, VV
core  

Terahertz Channel Modeling, Estimation and Localization in RIS‐Assisted Systems

open access: yesAdvanced Electronic Materials, EarlyView.
Reconfigurable intelligent surfaces have become a recent intensive research focus. Based on practical applications, channel strategies for RIS‐assisted terahertz wireless communication systems are categorized into three different types: channel modeling, channel estimation, and channel localization.
Hongjing Wang   +9 more
wiley   +1 more source

Fundamental Challenges, Physical Implementations, and Integration Strategies for Ising Machines in Large‐Scale Optimization Tasks

open access: yesAdvanced Electronic Materials, EarlyView.
Ising machines are emerging as specialized hardware solvers for computationally hard optimization problems. This review examines five major platforms—digital CMOS, analog CMOS, emerging devices, coherent optics, and quantum systems—highlighting physics‐rooted advantages and shared bottlenecks in scalability and connectivity.
Hyunjun Lee, Joon Pyo Kim, Sanghyeon Kim
wiley   +1 more source

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