时间反演

时间反演不变和轴对称限制条件下的EFV方法

EFV Method with the Constraints of Time Reversal Invariance and Axial Symmetry

时间反演（TR）作为一种在复杂媒质中实现时间和空间聚焦的技术，最初应用于声学，近年来被引入电磁波领域。

As a technique to focus signals both temporally and spatially in complex media , time reversal ( TR ) was first applied in acoustics , and in recent years it was introduced into electromagnetic wave field .

非常有意思的是在一定范围的Zeeman交换场的情况下，破坏了时间反演对称性，量子（赝）自旋霍尔态仍然存在。

Very interestingly , the quantum pseudospin Hall state still exists in a range of Zeeman field , where the TRS has been broken .

用密度矩阵理论、双能级模型和时间反演对称性推导了LICD的基本公式和存在条件。

Its fundamental formulae and existent conditions have been deduced using the density matrix theory with a two-level model and time-reversal arguments .

进一步提出了解决磁感应磁声层析扫描成像（MAT-MI）图像重构的时间反演理论，并且正在展开相关研究。

We also advanced the theory of time reversal which to resolve the reverse problem of magnetoacoustic tomography with magnetic induction ( MAT-MI ) .

本文首先讨论在弱相互作用中宇称不守恒问题，介绍若干个宇称违背的例子，进而讨论在K~o介于衰变中CP违背和时间反演不变性破坏的问题。

This paper discusses the nonconservation of parity in the weak interactions and explains this point by giving examples . It also discusses the problem of the violation of CP invariance in the decay of K0 mesons and that of the breakdown of the invariance under the time-reversal transformation .

在传统半导体激光器动力学方程的基础上，突出了垂直腔面发射激光器（VCSELs）的微腔结构特点以及相位共轭反馈（PCF）的时间反演特性，建立起相位共轭反馈条件下的复合腔仿真模型。

The micro-cavity characteristics of vertical-cavity surface-emitting lasers ( VCSELs ) and the time inversion characteristics of phase conjugate feedback ( PCF ) are considered , the compound cavity model with PCF is set up based on the typical dynamical equation of semiconductor lasers .

根据地震波在具有垂直对称轴的横向各向同性（VTI）介质中的运动学特征，应用传播时间反演方法，进行了水平层状VTI介质的地层弹性参数反演方法研究。

In this paper , seismic inversion of elastic parameters in horizontally layered VTI ( transverse isotropy media with vertical symmetry axis ) is well studied , on the basis of seismic wave kinematics theories in transverse isotropic media with vertical symmetry axis .

时间反演对称和非平衡统计定常态（Ⅰ）

Time reversal symmetry and non-equilibrium statistical stationary states ( I )

由传播时间反演海水中的声速剖面

Sound speed profile in ocean inverted by using travel time

时间反演不变性在亚原子物理中仍然是一种很有用的对称性。

Time reversal invariance is a very useful symmetry in subatomic physics .

磁性粒子的时间反演对称性和旋转对称性效应

Time Reversal Symmetry and Discrete Rotation Symmetry in Magnetic Particles

时间反演电磁波的传播特性及其应用

Propagation Characteristics of Time-Reversed Electromagnetic Wave and Its Application

基于电磁理论时间反演技术的分时多信道丛林目标探测系统

Target Detection System for Jungle Environment Using Electromagnetic Time-Reversal and Multi-Channel Time-Divided Technique

时间反演在浅海波导环境中的应用研究

Application of Time Reversal Acoustics in Shallow Water Environment

8-谈量子力学中的时间反演算子

On the time reversal operator of quantum mechanics

时间反演过程中可逆性佯谬的消除

Elimination of Reversibility Paradox in Time Reversal Processes

时间反演不变性预言，一个反应和它的逆反应，其跃迁几率相等。

Time-reversal invariance predicts equality of transition probabilities for a reaction and its inverse .

角动量耦合态的时间反演

The time reversal of angular momentum Coupled state

d波超导表面时间反演对称态的破缺效应对隧道谱的影响

A Broken Time Reversal Symmetry Pairing State of d-Wave Superconductor Effect on Tunneling Spectrum

时间反演T不是幺正的。

Time reversal T is not unitary .

物理学的基本方程式里面有种被称为时间反演对称性的特性

The fundamental equations of physics have a property which is referred to as time reversal symmetry

如果时间反演，这些碎片就能以很多方式结合起来。

If time moved backward , the broken pieces could come together in a great many ways .

在量子人体中，关于人体系统相互作用的时间反演不变性问题，笔者进行了探讨。

The article discussed the time retrival invariability problem about human body system interaction in quantum human body .

进一步利用实测的磷灰石裂变径迹年龄数据和径迹长度，开展了磷灰石的温度时间反演模拟研究。

Further temperature-time modeling of apatite was conducted on the basis of analytical data of the fission track length .

讨论了空间反射不变性和时间反演不变性给出的进一步的限制。

The further conditions which are given by the space-refletion invariance and the time reversal invariance are also discussed .

在外磁场作用下，电子波因获得附加相位而导致时间反演不变性被破坏，形成正的磁致电导。

In magnetic fields , electron wave gains an additional phase which breaks the time reversal symmetry , resulting in positive magneto-conductance .

测试结果表明，亚波长阵列结合时间反演电磁波能够展示出1/20波长超分辨率的聚焦特性。

Test results show that all these arrays could demonstrate the 1 / 20 wavelength super-resolution focusing characteristic with TR electromagnetic wave .

数值计算表明，外加磁通对时间反演对称性和电子的谷简并性均有影响。

The numerical results clearly suggest that the applied magnetic flux breaks the time reversal symmetry and lifts the valley degeneracy in graphene ring .

第六章研究了斯托克斯和反斯托克斯拉曼位移差与时间反演对称性。

The difference between the Stokes and anti-Stokes Raman shifts is proposed and theoretically explored on the basis of the time-reversal symmetry of light-scattering experiments .