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arXiv 1910.08400nucl-thcond-mat.othercond-mat.quant-gasnucl-ex
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核$^{12}$ C中$α$团簇结构的超实性

Supersolidity of the $α$ cluster structure in the nucleus $^{12}$C

S. Ohkubo, J. Takahashi, Y. Yamanaka

摘要:

半个多世纪以来,$^{12}$ C的结构,例如基态,已经被理解为可以通过基于几何晶体图像的三个$α$簇模型来很好地描述。相反,最近有人声称,$^{12}$ C的基态也很好地描述了一个非定域集团模型,没有任何的几何配置,原来提出的解释稀释气体类霍伊尔态,这是现在被认为是一个玻色爱因斯坦凝聚的$α$集团。具有挑战性的未解决的问题是,我们如何能够调和两个独特的$α$集群图片的$^{12}$ C,结晶与非定域结构。我们发现,结晶簇图片和非定域簇图片可以调和注意到,它们是一种表现的超固体与结晶度和超流性的属性。这是通过基于有效场论的超流$α$团簇模型实现的,该模型严格地处理了Nambu-Goldstone零模。几十年来,科学家们一直在自然界中寻找一种超固体,核$α$簇结构被认为是第一个被证实的稳定超固体的例子。

英文摘要:

For more than half a century, the structure of $^{12}$C, such as the ground band, has been understood to be well described by the three $α$ cluster model based on a geometrical crystalline picture. On the contrary, recently it has been claimed that the ground state of $^{12}$C is also well described by a nonlocalized cluster model without any of the geometrical configurations originally proposed to explain the dilute gas-like Hoyle state, which is now considered to be a Bose-Einstein condensate of $α$ clusters. The challenging unsolved problem is how we can reconcile the two exclusive $α$ cluster pictures of $^{12}$C, crystalline vs nonlocalized structure. We show that the crystalline cluster picture and the nonlocalized cluster picture can be reconciled by noticing that they are a manifestation of supersolidity with properties of both crystallinity and superfluidity. This is achieved through a superfluid $α$ cluster model based on effective field theory, which treats the Nambu-Goldstone zero mode rigorously. For several decades, scientists have been searching for a supersolid in nature.Nuclear $α$ cluster structure is considered to be the first confirmed example of a stable supersolid.

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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