Holographic impurities and Kondo effect

被引：28

作者：

Erdmenger, Johanna ^{[1
]}

Flory, Mario ^{[1
]}

Hoyos, Carlos ^{[2
]}

Newrzella, Max-Niklas ^{[1
]}

O'Bannon, Andy ^{[3
]}

Wu, Jackson M. S. ^{[4
]}

机构：

[1] Max Planck Inst Phys & Astrophys, Werner Heisenberg Inst, Fohringer Ring 6, D-80805 Munich, Germany

[2] Univ Oviedo, Dept Phys, Avda Calvo Sotelo 18, Oviedo 33007, Spain

[3] Univ Southampton, STAG Res Ctr, Phys & Astron, Southampton SO17 1BJ, Hants, England

[4] Univ Alabama, Dept Phys & Astron, Tuscaloosa, AL 35487 USA

来源：

FORTSCHRITTE DER PHYSIK-PROGRESS OF PHYSICS | 2016年 / 64卷 / 4-5期

关键词：

AdS/CFT; Entanglement Entropy; g-theorem; Kondo effect; CONFORMAL-FIELD-THEORY; RENORMALIZATION-GROUP APPROACH; DILUTE MAGNETIC-ALLOYS; QUANTUM CRITICALITY; STATIC PROPERTIES; ANDERSON MODEL; DIAGONALIZATION; METALS;

D O I：

10.1002/prop.201500079

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Magnetic impurities are responsible for many interesting phenomena in condensed matter systems, notably the Kondo effect and quantum phase transitions. Here we present a holographic model of a magnetic impurity that captures the main physical properties of the large-spin Kondo effect. We estimate the screening length of the Kondo cloud that forms around the impurity from a calculation of entanglement entropy and show that our results are consistent with the g-theorem.

引用

页码：322 / 329

页数：8

共 67 条

[1] EXACT CONFORMAL-FIELD-THEORY RESULTS ON THE MULTICHANNEL KONDO EFFECT - SINGLE-FERMION GREEN-FUNCTION, SELF-ENERGY, AND RESISTIVITY [J].