Ashkin-Teller transition of Rydberg atoms with two-site blockade
Ashkin-Teller transition of Rydberg atoms with two-site blockade
复制标题
具有二位点封锁的里德堡原子的 Ashkin-Teller 跃迁
DOI：
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发表时间：
2020
期刊：
影响因子：
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通讯作者：
F. Mila
中科院分区：
文献类型：
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作者：
Natalia Chepiga;F. Mila
受最近一维阱中里德伯原子实验的启发，我们在具有两点阻塞的硬玻色子模型下研究了$mathbb{Z}_4$晶相的相变.使用广泛的DMRG模拟，我们表明，过渡沿着公度线是在Ashkin-Teller普适类与指数$
u Simeq 0.78，大到足以使手性微扰相关。这进一步证实了我们的数值计算结果沿着的过渡线，表明过渡立即离开Ashkin-Teller普适类，这是一致的小范围的手征转变，随后开放的浮动相。
Motivated by recent experiments on Rydberg atoms in a 1D trap, we study the phase transition out of the $mathbb{Z}_4$ crystalline phase in the context of a hard-boson model with two-site blockade. Using extensive DMRG simulations, we show that the transition along the commensurate line is in the Ashkin-Teller universality class with an exponent $
u simeq 0.78$, large enough for chiral pertubations to be relevant. This is further confirmed by our numerical results along the transition line which show that the transition immediately leaves the Ashkin-Teller universality class, and which are consistent with a small range of chiral transition followed by the opening of a floating phase.