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- The two four-valent rescaled bases are obtained in the spin networks representation to prove that the change of the basis is a unitary transformation. 摘要给出了自旋网表象中的两个4价基底,证明了它们之间的变换属酉变换。
- Spin networks representation 自旋结网表象
- Each spin network resembles a snapshot, a frozen moment in the universe. 每个自旋网络就像一张快照,即宇宙中某个冻结的瞬间。
- Roger Penrose of the University of Oxford first proposed in the early 1970s that spin networks might play a role in theories of quantum gravity. 这是英国牛津大学的彭若斯(RogerPenrose)在1970年代早期首先提出,而自旋网络也许会在量子重力的理论中,扮演某种角色。
- Readers familiar with Feynman diagrams should note that our spin networks are not Feynman diagrams, despite the superficial resemblance. 熟悉费曼图(Feynmandiagram)的读者,应该已经注意到了,我们的自旋网络并不是费曼图,尽管它们从表面上看起来十分类似。
- These effects also occur for light and particles moving through the discrete space described by a spin network. 这些效应在光和粒子穿过自旋网络所描述的离散空间时,也会发生。
- In particular, Thomas Thiemann of the Perimeter Institute for Theoretical Physics in Waterloo, Ontario, has derived precise quantum probabilities for the spin network moves. 特别一提的是,加拿大滑铁卢圆周理论物理研究院的提曼(ThomasThiemann),已经导出自旋网络步进的精确量子或然率。
- We do the same when we apply loop quantum gravity theory to describe phenomena, whether it be particles and fields moving on the spin networks or the geometry of space itself evolving in time. 我们应用环圈量子重力来描述现象的时候,也是做相同的事情,不管是在描述粒子与场在自旋网络上的移动,或是空间几何本身随时间的演化,都是一样。
- Simulation Models for Road Network Representation 路网描述仿真模型
- communication network representation 交通网表示法
- The lorry went into a spin on a patch of ice. 卡车在一片冰地上打滑了。
- Let's go for a spin in my new car. 坐我的新汽车兜一圈吧。
- I've been in a real spin all morning. 我整个上午都晕头转向的。
- The pitcher gave a spin to the ball. 投手使球旋转。
- Image Denoising Using Cross-Validation Method with RBF Network Representation 基于RBF神经网络的交叉检验图像降噪方法
- He has been in a spin since the defeat. 他被击败以来一直情绪低落。
- Get your bicycle and come for a spin. 把你的脚踏车拿来去兜一圈。
- My sister can spin on her toes like a dancer. 我妹妹能像舞者一样踮着脚尖旋转。
- The news sent prices into a spin. 那消息使物价急遽下降。
- They spin at 400-500 revolutions per minute. 它们每分钟旋转四百到五百周。