Strong coupling approach to the supersymmetric Kondo model
نویسندگان
چکیده
منابع مشابه
0 Strong Coupling Approach to the Supersymmetric Kondo Model
We carry out the strong coupling expansion for the SU (N) Kondo model where the impurity spin is represented by a L-shaped Young tableau. Using second order perturbation theory around the strong coupling fixed point it is shown that when the antisymmetric component of the Young-tableau contains more than N/2 entries, the strong-coupling fixed point becomes unstable to a two-stage Kondo effect. ...
متن کاملStrong Coupling Approach to the Supersymmetric Kondo Model
We carry out the strong coupling expansion for the SU (N) Kondo model where the impurity spin is represented by a L-shaped Young tableau. Using second order perturbation theory around the strong coupling fixed point it is shown that when the antisymmetric component of the Young-tableau contains more than N/2 entries, the strong-coupling fixed point becomes unstable to a two-stage Kondo effect. ...
متن کاملThe Kondo lattice model from strong-coupling viewpoint
We study the magnetic excitation spectrum of the two-dimensional (2D) squarelattice S=1/2 Kondo lattice model at finite (hole) doping, by representing the Hamiltonian in terms of a set of local excitations. The location of the paramagneticantiferromagnetic phase boundary at T=0 is determined.
متن کاملA maximally supersymmetric Kondo model
We study the maximally supersymmetric Kondo model obtained by adding a fermionic impurity to N = 4 supersymmetric Yang-Mills theory. While the original Kondo problem describes a defect interacting with a free Fermi liquid of itinerant electrons, here the ambient theory is an interacting CFT, and this introduces qualitatively new features into the system. The model arises in string theory by con...
متن کاملFrom Kondo Model and Strong Coupling Lattice Qcd to the Isgur-wise Function
Isgur-Wise functions parametrise the leading behaviour of weak decay form factors of mesons and baryons containing a single heavy quark. The form factors for the quark mass operator are calculated in strong coupling lattice QCD, and Isgur-Wise functions extracted from them. Based on renormalisation group invariance of the operators involved, it is argued that the Isgur-Wise functions would be t...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nuclear Physics B
سال: 2000
ISSN: 0550-3213
DOI: 10.1016/s0550-3213(00)00419-3