arXivDaily arXiv每日学术速递 周一至周五更新
北美退伍军人节(Veterans Day),12 日无更新
arXiv 2003.13597cond-mat.str-el
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横场伊辛梯及以后的量子多体伤疤

Quantum many-body scars in transverse field Ising ladders and beyond

Bart van Voorden, Jiří Minář, Kareljan Schoutens

摘要:

我们在梯子上的横向场量子伊辛模型中识别出量子多体伤疤。我们明确了相应的(中光谱,低纠缠)多体本征态可以近似注入准粒子激发到一个确切的,零能量的本征态,这是价键固体类型。接下来,我们提出了一个系统的建设产品状态的特点,在一个弱的横向场的限制,由一个尖锐的峰值局部态密度。我们描述了如何建设这些“峰态”推广到任意尺寸,并表明,在阶梯上,他们的数量尺度与系统大小的平方黄金分割率。

英文摘要:

We identify quantum many-body scars in the transverse field quantum Ising model on a ladder. We make explicit how the corresponding (mid spectrum, low entanglement) many-body eigenstates can be approximated by injecting quasi-particle excitations into an exact, zero-energy eigenstate, which is of valence bond solid type. Next, we present a systematic construction of product states characterized, in the limit of a weak transverse field, by a sharply peaked local density of states. We describe how the construction of these "peak states" generalizes to arbitrary dimension and show that on the ladder their number scales with system size as the square of the golden ratio.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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