Holographic Charge Density Waves
Holographic Charge Density Waves
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DOI：
10.1016/j.physletb.2011.06.092
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发表时间：
2010-09
影响因子：
4.4
通讯作者：
A. Aperis;P. Kotetes;E. Papantonopoulos;G. Siopsis;Petros Skamagoulis;G. Varelogiannis
中科院分区：
文献类型：
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作者：
A. Aperis;P. Kotetes;E. Papantonopoulos;G. Siopsis;Petros Skamagoulis;G. Varelogiannis
我们讨论由 Schwarzschild-AdS4 黑洞背景中的 U(1) 规范场和两个标量场以及反对称场（探测极限）组成的电荷密度波的引力对偶。相互作用驱动系统在临界温度以下发生相变。我们对基态进行了数值计算，其特征是与共形场理论中动态生成的单向电荷密度波相对应的规范电势的调制解。通过研究对外部电场的动态响应来检索全息密度波的特征。我们发现这种新颖的全息态与电荷密度波系统的标准凝聚态版本具有许多共同特征。
We discuss a gravity dual of a charge density wave consisting of a U(1) gauge field and two scalar fields in the background of a Schwarzschild–AdS4black hole together with an antisymmetric field (probe limit). Interactions drive the system to a phase transition below a critical temperature. We numerically compute the ground states characterized by modulated solutions for the gauge potential corresponding to a dynamically generated unidirectional charge density wave in the conformal field theory. Signatures of the holographic density waves are retrieved by studying the dynamical response to an external electric field. We find that this novel holographic state shares many common features with the standard condensed matter version of charge density wave systems.