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arXiv 1610.02422hep-thcond-mat.str-el
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SYK模型的高维推广

Higher Dimensional Generalizations of the SYK Model

Micha Berkooz, Prithvi Narayan, Moshe Rozali, Joan Simón

摘要:

我们讨论了Sachdev-Ye-Kitaev模型的1+1维推广。该模型包含$N$马约拉纳费米子在每个晶格位置的最近邻跳跃项。SYK随机相互作用被限制在每个晶格位置内的确定的手征性的低动量费米子。这就产生了一个普通的1+1场论以上的一些能量尺度和一个低能量SYK的行为。我们展示了一类低通滤波器,产生了丰富的各种超标度行为的IR。我们还讨论了另一组概括,描述探测SYK系统与外部费米子,连同新的标度行为,他们表现出的IR。

英文摘要:

We discuss a 1+1 dimensional generalization of the Sachdev-Ye-Kitaev model. The model contains $N$ Majorana fermions at each lattice site with a nearest-neighbour hopping term. The SYK random interaction is restricted to low momentum fermions of definite chirality within each lattice site. This gives rise to an ordinary 1+1 field theory above some energy scale and a low energy SYK-like behavior. We exhibit a class of low-pass filters which give rise to a rich variety of hyperscaling behaviour in the IR. We also discuss another set of generalizations which describes probing an SYK system with an external fermion, together with the new scaling behavior they exhibit in the IR.

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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