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Ancient Two-Legged Lizard Intrigues Scientists
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作者 Maggie Fox 吴根林 《当代外语研究》 2000年第12期16-18,共3页
使阑人静。在网上读到此文,我的思绪似乎回到遥远的旷古年代。恐龙是当时地球的主宰。在地球动物的进化史上,从爬行到站立行走奔跑的动物并不多,恐龙就是一例。令科学家兴奋不已的是,在恐龙之前,已有先例,那就 是最近考古发现的蜥蜴Eudi... 使阑人静。在网上读到此文,我的思绪似乎回到遥远的旷古年代。恐龙是当时地球的主宰。在地球动物的进化史上,从爬行到站立行走奔跑的动物并不多,恐龙就是一例。令科学家兴奋不已的是,在恐龙之前,已有先例,那就 是最近考古发现的蜥蜴Eudibamus cursoris,这种食草蜥蜴能够收缩起前肢,利用后肢狂奔,以逃避食肉动物的袭击。据此本文的末尾有如此推断: Perhaps their two-legged escape machinery made them especially successful herbivores(食草动物),they said. 读者朋友,你也许为本句中的一个常用词machinery而犯愁,那么,请看本文为此所加的注释吧。】 展开更多
关键词 食肉动物 Ancient two-legged Lizard Intrigues Scientists
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Phase diagram of interacting fermionic two-leg ladder with pair hopping
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作者 Wan-Li Liu Tian-Zhong Yuan +1 位作者 Zhi Lin Wei Yan 《Chinese Physics B》 SCIE EI CAS CSCD 2019年第2期123-128,共6页
We study the phase diagram of the interacting fermionic two-leg ladder, which is featured by pair hopping and interactions of singlet and triplet superconducting channels. By using Abelian bosonization method, we obta... We study the phase diagram of the interacting fermionic two-leg ladder, which is featured by pair hopping and interactions of singlet and triplet superconducting channels. By using Abelian bosonization method, we obtain the full phase diagram of our model. The superconducting triplet pairing phase is characterized by a fractional edge spin and interpreted as two Kitaev chains under the mean filed approximation. The pair hopping will give rise to spin-density-wave(SDW)orders and can also support Majorana edge modes in spin channel. At half filling, the resulting Majorana-SDW phase shows additional fractionalization in charge channel, and can be interpreted as two Su–Schrieffer–Heeger(SSH) chains in the mean field regime. 展开更多
关键词 two-leg LADDER PAIR HOPPING BOSONIZATION Majorana fermion
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