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 1906.09668cond-mat.stat-mech
收藏

长程耦合下具有竞争相互作用的Ising链

Ising chains with competing interactions in presence of long-range couplings

Alessandro Campa, Giacomo Gori, Vahan Hovhannisyan, Stefano Ruffo, Andrea Trombettoni

摘要:

本文研究了在正则系综中存在长程铁磁相互作用的情况下,具有短程竞争相互作用的伊辛自旋链。同时存在的挫折感引起的短程耦合与他们的竞争与长期引起的丰富的热力学相图。我们比较我们的结果与限制,其中两个本地相互作用之一是关闭的,这是以前在文献中研究。八个区域的参数具有不同的性质,具有不同的第一和第二阶相变线和临界点。

英文摘要:

In this paper we study an Ising spin chain with short-range competing interactions in presence of long-range ferromagnetic interactions in the canonical ensemble. The simultaneous presence of the frustration induced by the short-range couplings together with their competition with the long-range term gives rise to a rich thermodynamic phase diagram. We compare our results with the limit in which one of two local interactions is turned off, which was previously studied in the literature. Eight regions of parameters with qualitatively distinct properties are featured, with different first- and second-order phase transition lines and critical points.

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。

↑