Holographic RG flows for Kondo-like impurities

  title={Holographic RG flows for Kondo-like impurities},
  author={Johanna Erdmenger and Charles M. Melby-Thompson and Christian Northe},
  journal={Journal of High Energy Physics},
Boundary, defect, and interface RG flows, as exemplified by the famous Kondo model, play a significant role in the theory of quantum fields. We study in detail the holographic dual of a non-conformal supersymmetric impurity in the D1/D5 CFT. Its RG flow bears similarities to the Kondo model, although unlike the Kondo model the CFT is strongly coupled in the holographic regime. The interface we study preserves d = 1 N $$ \mathcal{N} $$ = 4 supersymmetry and flows to conformal fixed points in… 
Universal relations for holographic interfaces
Abstract We study the entanglement entropy in 1+1 dimensional conformal field theories in the presence of interfaces from a holographic perspective. Compared with the well-known case of boundary
Symmetry-resolved entanglement in AdS3/CFT2 coupled to U(1) Chern-Simons theory
Abstract We consider symmetry-resolved entanglement entropy in AdS3/CFT2 coupled to U(1) Chern-Simons theory. We identify the holographic dual of the charged moments in the two-dimensional conformal
Non-equilibrium dynamics in Holography
In this thesis, we investigate aspects of non-equilibrium dynamics of strongly coupled field theories within holography. We establish a hydrodynamic description for anomalous quantum field theories
Solving holographic defects
Defect conformal field theories (dCFTs) have been attracting increased attention recently, mainly because they enable us to bridge the gap between idealistic, highly symmetric models of our world


Boundary entropy of supersymmetric Janus solutions
In this paper we compute the holographic boundary entropy for half-BPS Janus deformations of the AdS3 × S3 × T4 vacuum of type IIB supergravity. Previous work [24] has shown that there are two
  • 1999
  • Wilson lines, and D-branes, Phys. Rev. D91
  • 2015
Kondo effect
Stable wrapped branes
We study some wrapped configurations of branes in the near-horizon geometry of a stack of other branes. The common feature of all the cases analyzed is a quantization rule and the appearance of a
String junctions and holographic interfaces
In this paper we study half-BPS type IIB supergravity solutions with multiple ${\mathrm{AdS}}_{3}\ifmmode\times\else\texttimes\fi{}{S}^{3}\ifmmode\times\else\texttimes\fi{}{M}_{4}$ asymptotic
Half-BPS solutions locally asymptotic to AdS3 × S3 and interface conformal field theories
Type IIB superstring theory has AdS3 × S3 × M4 (where the manifold M4 is either K3 or T4) solutions which preserve sixteen supersymmetries. In this paper we consider half-BPS solutions which are
Diagonalisation of the generalised Anderson model
Using the Bethe ansatz technique the authors have diagonalised Coleman's (1984-5) generalisation of the single-impurity infinite-U Anderson model. A special limit of their solution extends earlier
Basic Concepts of String Theory
The Classical Bosonic String.- The Quantized Bosonic String.- Introduction to Conformal Field Theory.- Parametrization Ghosts and BRST Quantization.- String Perturbation Theory and One-Loop
Boundary entropy of one-dimensional quantum systems at low temperature.
A gradient formula for the boundary beta function is proved, expressing it as the gradient of the boundary entropy s at fixed nonzero temperature, which implies that s decreases under renormalization, except at critical points (where it stays constant).