Holographic quantum liquid.
Holographic quantum liquid.
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全息量子液体。
DOI：
10.1103/physrevlett.102.051602
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发表时间：
2009
影响因子：
8.6
通讯作者：
Karch A
中科院分区：
文献类型：
--
作者：
Karch A
量子液体具有独特的性质，如热容的低温行为和低能准粒子激发光谱。特别是，在低温下，费米液体表现出零声，这是朗道在1957年预测的，随后在液体He-3中观察到的。在这封信中，我们问这样的特征行为是否存在于全息双重描述的理论中。我们考虑一类具有基本物质场的规范理论，它的全息对偶在适当的极限下由反de Sitter空间中的Dirac-Born-Infeld作用量给出。我们发现，尽管这些系统具有非费米液体的比热行为，但它们在零温度下也表现出声模。这些性质表明，全息术发现了一种新型的量子液体，这种液体有可能在强关联系统中实验实现。
Quantum liquids are characterized by the distinctive properties such as the low-temperature behavior of heat capacity and the spectrum of low-energy quasiparticle excitations. In particular, at low temperature, Fermi liquids exhibit the zero sound, predicted by Landau in 1957 and subsequently observed in liquid He-3. In this Letter, we ask whether such characteristic behavior is present in theories with a holographically dual description. We consider a class of gauge theories with fundamental matter fields whose holographic dual in the appropriate limit is given in terms of the Dirac-Born-Infeld action in anti–de Sitter space. We find that these systems also exhibit a sound mode at zero temperature despite having a non-Fermi-liquid behavior of the specific heat. These properties suggest that holography identifies a new type of quantum liquid which potentially could be experimentally realized in strongly correlated systems.
影响因子：
5.4
作者：
Shinpei Kobayashi;D. Mateos;S. Matsuura;R. Myers;R. Thomson
通讯作者：
Shinpei Kobayashi;D. Mateos;S. Matsuura;R. Myers;R. Thomson