搜索结果: 1-15 共查到“物理学 a twist”相关记录15条 . 查询时间(0.031 秒)
An interdisciplinary team of Cornell researchers has taken its breakthrough discovery – which melded the ability of soft organic materials to spontaneously self-organize with quantum materials to crea...
N-enlarged Galilei Hopf algebra and its twist deformations
N-enlarged Galilei Hopf algebra Mathematical Physics
2012/5/24
The N-enlarged Galilei Hopf algebra is constructed. Its twist deformations are considered and the corresponding twisted space-times are derived.
Leading twist nuclear shadowing phenomena in hard processes with nuclei
shadowing phenomena hard processes nuclei
2011/7/21
We present and discuss the theory and phenomenology of the leading twist theory of nuclear shadowing which is based on the combination of the generalization of Gribov-Glauber theory, QCD factorization...
Leading twist nuclear shadowing phenomena in hard processes with nuclei
twist nuclear phenomena hard processes nuclei
2011/7/21
We present and discuss the theory and phenomenology of the leading twist theory of nuclear shadowing which is based on the combination of the generalization of Gribov-Glauber theory, QCD factorization...
A new twist on transmission electron microscopy (TEM) could enable the technique to unlock even more secrets on the nanoscale. Researchers in the US have produced a helical-shaped beam of electrons th...
Physicists have used holography to reliably do to electrons what they can already do to photons – twist the particle wavefronts to create beams with vortices at their centre. The researchers say that ...
New twist to electron beams（图）
electron beams the fundamental physical property orbital angular momentum
2010/4/15
Physicists in Japan have for the first time generated beams of electrons displaying the fundamental physical property of orbital angular momentum. Like light beams before, these electron beams have ha...
本文用QCD求和规则计算了π介子和K介子的两个twist-3分布振幅的归一化常数m_{0π}^p和m_{0K}^p. 与运动方程的要求不同, 我们的计算结果表明(把求和规则微扰部分的αs修正考虑之后), m_{0π}^p=1.00±0.17GeV,m_{0K}^p=1.46±0.23GeV. 应该指出的是, 它们与运动方程给出的结果相比要小不少. 比如π介子的情形, QCD求和规则给出的上述结果...
QCD因子化方案中twist-3波函数和红外发散问题
B介子衰变 QCD因子化 红外发散 twist-3波函数
2008/1/26
在QCD因子化框架下讨论了B介子到两个轻赝标介子衰变中手征增强的修正问题. 证明了只有在twist-3波函数对称的情况下，顶角修正的红外发散才能相消. 因而只有在这种情况下，手征增强的修正才能自洽地被包含进来. 作者还对旁观者硬散射中出现的发散进行了讨论.
Modular Transformation and Twist Between Trigonometric Limits of sl(n) Elliptic R-Matrix
elliptic R-matrix twist modular transformation
2007/8/15
2001Vol.36No.2pp.131-134DOI:
Modular Transformation and Twist Between Trigonometric Limits of sl(n) Elliptic R-Matrix
YANG Wen-Li and ZHEN Yi
Institute of Modern Physics...
A Model for the Twist-3 Wave Function of the Pion and Its Contribution to the Pion Form Factor
2007/7/28
期刊信息
篇名
A Model for the Twist-3 Wave Function of the Pion and Its Contribution to the Pion Form Factor
语种
英文
撰写或编译
作者
黄涛,吴兴刚
第一作者单位
刊物名称
Phys.Rev
页面
D70，093013-11页 (2004
出版日期
2004年
月
日
文章标识(ISSN)
相关项目...
24 January 2007，Fifty years ago, physicists Robert Hanbury Brown and Richard Twiss noticed that photons from the star Sirius tended to arrive at a pair of detectors at the same time. They realised tha...
Non-Twist Field Line Mappings for Tokamaks with Reversed Magnetic Shear
Non-Twist Field Line Mappings Tokamaks Reversed Magnetic Shear
2010/10/27
The structure of magnetic field lines in a tokamak with reversed magnetic shear is investigated by means of analytically derived area-preserving non-twist Poincar´e maps. The basic configuration...
Multiple Structures of (110) CSL Twist Boundaries in fcc Metals
CSL Twist Boundaries fcc Metals
2010/4/15
The geometry of different possible structures of (110) fcc twist boundaries is explored. Computer simulation of all possible low energy structures have been carried out for S=3 and S=9 twist boundarie...
The Structure of (001) CSL Twist Boundaries in fcc Metals
(001) CSL Twist Boundaries fcc Metals
2010/4/19
Computer simulation techniques based on discrete lattice approach and empirical many-body potentials have been used to study the structure and energy of S = 5, and S = 13 coincident site lattice (001)...