搜索结果: 1-14 共查到“电子物理学 o.d.e. systems”相关记录14条 . 查询时间(0.14 秒)
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Spectral instability of Electronic Euler-Poisson System
电子 Euler-Poisson系统 谱不稳定性
2023/12/11
The focus of this presentation is the spectral (in-)stability of periodic waves for the electronic Euler-Poisson system, a hydrodynamical model for understanding electron dynamics in plasmas. It is fo...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Topological materials: concept, theory, prediction, and detection
拓扑材料 固体物理学 量子霍尔效应
2023/4/17
物理学中许多概念是在不断地发展中的。例如人们对光、电子等的理解与它们刚开始出现时的概念已经发生了许多进化，而固体物理学中的“绝缘体”概念也是如此。近三十年来，量子霍尔效应的相关研究不仅催生了拓扑序这一新的物相分类，也推动了拓扑绝缘体这一新兴研究领域的诞生和发展。随着量子自旋霍尔效应、拓扑晶体绝缘体等工作的后续展开，人们意识到对称性可以带来新的拓扑态，同时也不断地在“普通绝缘体”中发现新的拓扑态。这...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Does qubit connectivity impact quantum circuit complexity
量子比特连接 量子电路 复杂性
2023/4/13
Some physical implementation schemes of quantum computing -- such as those based on superconducting qubits, quantum dots, and cold atoms -- can apply two-qubit gates only on certain pairs of qubits. O...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Equivalence Checking of Quantum Circuits by Nonlocality
量子电路 非局域 等价性检验
2023/4/17
Suppose two quantum circuit chips are located at different places, for which we do not have any prior knowledge, and cannot see the internal structures either. In such a situation, a realistic and fun...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：基于谱形因子的量子混沌与退相干的研究
谱形因子 量子混沌 退相干
2023/5/10
谱形因子的"倾角-斜坡-平台"结构可以反映量子混沌效应的强弱，特别是"斜坡"的展宽是复杂系统能级长程关联的直接体现。本报告主要以随机矩阵和Sachdev-Ye-Kitaev模型为例，介绍我们对于量子混沌与量子退相干之间关系的一些研究进展，包括：1）退相干可以抑制倾角的出现并且缩短与混沌行为相关的线性斜坡的跨度，也就是说退相干可以抑制混沌效应；2）进一步发现在具有平衡增益和损失的非厄米演化过程中却可...
Local Convertibility and Edge States in Quantum Many Body Systems
Local Convertibility Edge States Quantum Many Body Systems
2016/1/22
In some many-body systems, certain ground-state entanglement (Rényi) entropies increase even as the correlation length decreases. This entanglement nonmonotonicity is a potential indicator of nonclass...
Berezinskii-Kosterlitz-Thouless Transition in Two-Dimensional Dipole Systems
Super fluid fluid dipolar bosons path integral monte carlo simulation high density temperature particle excitation spectrum
2014/12/18
The superfluid to normal fluid transition of dipolar bosons in two dimensions is studied in a broad density range by using path integral Monte Carlo simulations and summarized in the phase diagram. Wh...
Dynamical Magnetic and Nuclear Polarization in Complex Spin Systems: Semi-magnetic II-VI Quantum Dots
Dynamical Magnetic and Nuclear Polarization in Complex Spin Systems: Semi-magnetic II-VI Quantum Dots
2012/2/27
Dynamical magnetic and nuclear polarization in complex spin systems is discussed on the example of transfer of spin from exciton to the central spin of magnetic impurity in a quantum dot in the presen...
Krylov-Bogoliubov-Mitropolsky Averaging Used to Construct Effective Hamiltonians in the Theory of Strongly Correlated Electron Systems
Effective Hamiltonians Strongly Correlated Electron Systems
2010/11/23
We show that the Krylov-Bogoliubov-Mitropolsky averaging in the canonical formulation can be used as a method for constructing effective Hamiltonians in the theory of strongly correlated electron syst...
It is shown that natural boundary conditions for non-relativistic wave functions are of periodic or of homogeneous Robin type. Using theory of singular differential equations and asymptotic central sy...
Manipulating quantum information on the controllable systems or subspaces
Manipulating quantum information controllable systems subspaces
2010/10/29
In this paper, we explore how to constructively manipulate quantum information on the controllable systems or subspaces. It is revealed that one can make full use of distinguished properties of Pauli ...
Nonlinear Quantum Wave Equation of Radiation Electron and Dissipative Systems
Nonlinear Quantum Wave Equation Radiation Electron
2010/3/10
As well known, an electron will produce radiative reaction force when the electron emits electromagnetism radiation. The electron radiative effect had not been considered in Schr\"{o}dinger wave equat...
Bifurcation of robust heteroclinic cycles in spherically invariant systems with $\ell =3,4$ mode interaction
robust heteroclinic cycles spherically invariant
2010/4/7
Bifurcation with spherical symmetry and mode interaction is known to produce robust heteroclinic cycles between axisymmetric steady-states. The case of mode interaction with representations of $\SO3$ ...
Dielectric properties of liquid systems: the ideal complex permittivity in liquid mixtures
Dielectric Properties Complex Permittivity Binary Mixtures Excess Functions
2010/4/8
A general definition for ideal complex permittivity in a liquid mixture was reached by considering a thermodynamically ideal mixture under the effect of an applied harmonic electric field. The resulti...
