【摘 要】
：
The local sine-Gordon model with two frequencies is studied by a variational method. The renormalization mass and classical field path are calculated. We find a
【机 构】
：
Pohl Institute for Solid State Physics,Tongji University Shanghai,200092
论文部分内容阅读
The local sine-Gordon model with two frequencies is studied by a variational method. The renormalization mass and classical field path are calculated. We find an Ising-like phase transition, which is analogous in the global sine-Gordon model with two frequencies. A full phase diagram is given.
其他文献
Based on the solution of the Bargmann-Wigner equation for an arbitrary integral spin, a direct derivation of the projection operator and propagator for an arbit
茶树越冬叶和新梢生长的关系密切。越冬叶通过光合作用贮藏碳水化合物于春季供给新梢生长;在构成新梢的碳素中,大部分也来自越冬叶的生产。有许多事实说明冬季寒干害致使越
A new pumping-probing scheme for the optically pumped cesium beam frequency standard has been experimentally tested in our laboratory. The stability of the opti
The conservation of the hydrophobic and the hydrophilic residue sites obtained from 1000 designed sequences with the Z-score method for a four-helix bundle has
We propose that a slowly-moving standing wave can be used to manipulate the motion of an atomic wave packet in a hollow optical fibre. A cloud of cold atoms ca
We analyse the directed, weighted and evolutionary US flight network, in which vertices are the airports and the flights connecting two airports represent the e
几天前，王柯在我的办公室门口探头探脑的，看见我在办公室，就缩着身子非常拘谨地走进来。我说：“来，王珂，坐下。有什么事需要我帮忙吗？”他紧张地说：“老师，我想送给你一些东西，你一定要收下。”说着，他从上衣口袋里掏出一个橘子和几个枣放在我的办公桌上。看着他满脸的真诚的样子，我不忍心一下子全都拒绝，就告诉他：“谢谢你！老师不喜欢吃橘子，要不就把枣留下吧！”他嘟囔着嘴，摇着头坚决不同意。我也只好先让他把东
We study the electronic transport of a quantum wire partly irradiated under an exteal terahertz (THz) electromagnetic field. Using the free-electron model and s
A flashing coloured noise model is proposed to describe the motion of a molecular motor. In this model,the overdamped Brownian particle moves in an asymmetric p
摘要：我国《票据法》第36条对期后背书的规定较国际上较为特殊,且法条本身存在着矛盾模糊之处,本文试图在探讨期后背书的内涵比较、期后背书的效力、期后背书持票人持票权利性质后,以对該法条做出进一步梳理。 关键词：期后背书法律效力持票人权利 《中华人民共和国票据法》（以下简称《票据法》）第36条这样规定："汇票被拒绝承兑、被拒绝付款或者超过付款提示期限的,不得背书转让;背书转让的,背书人应当承担票据