Fractionalization of holographic Fermi surfaces
Fractionalization of holographic Fermi surfaces
复制标题
DOI：
10.1088/0264-9381/29/19/194001
复制
发表时间：
2011-11
影响因子：
3.5
通讯作者：
S. Hartnoll;L. Huijse
中科院分区：
文献类型：
--
作者：
S. Hartnoll;L. Huijse
有限电荷密度下物质的零温态可以用具有渐近电通量的时空全息描述。这种通量可以来源于大量的显式带电物质场，极端黑洞视界，或两者的组合。我们把它们分别称为物质的介子相、完全分馏相和部分分馏相。通过将费米子的带电流体耦合到渐近AdS 4 Einstein-Maxwell-Maxwell理论，我们展示了所有这三个阶段之间的量子相变。分馏的开始可以是一阶或连续相变。在后一种情况下，在量子临界点的理论显示出一个紧急的Lifshitz标度对称的IR。
Zero temperature states of matter at finite charge density are holographically described by a spacetime with an asymptotic electric flux. This flux can be sourced either by explicit charged matter fields in the bulk, by an extremal black hole horizon, or by a combination of the two. We refer to these as mesonic, fully fractionalized and partially fractionalized phases of matter, respectively. By coupling a charged fluid of fermions to an asymptotically AdS4 Einstein–Maxwell-dilaton theory, we exhibit quantum phase transitions between all three of these phases. The onset of fractionalization can be either a first order or continuous phase transition. In the latter case, at the quantum critical point the theory displays an emergent Lifshitz scaling symmetry in the IR.