61 citations · 244 across the 10 of their papers we have counts for
10 papers
Spin dynamics from Majorana fermions
W. Mao, P. Coleman, C. Hooley +1
Using the Majorana fermion representation of spin-1/2 local moments, we show how it is possible to directly read off the dynamic spin correlation and susceptibility from the one-pa…
Non Fermi Liquid behavior in the under-screened Kondo model
P. Coleman, C. Pepin
Using the Schwinger boson spin representation, we reveal a new aspect to the physics of a partially screened magnetic moment in a metal, as described by the spin Kondo model. W…
Heavy Electron Quantum Criticality
P. Coleman, C. Pepin
Although the concept of a quantum phase transition has been known since the nineteen seventies, their importance as a source of radical transformation in metallic properties has on…
Supersymmetric approach to the infinite U Hubbard Model
P. Coleman, C. Pepin
We present a preliminary discussion on the use of supersymmetric representation of the Hubbard operator which unifies the slave boson and slave fermion representations into a singl…
LiV2O4: evidence for two-stage screening
J. Hopkinson, P. Coleman
LiV2O4, a frustrated mixed valent metal (d^1 <-> d^2), is argued to undergo two spin-screening processes. The first quenches the effective spin to produce the spin 1/2 behavior see…
Oscillatory instabilities in d.c. biased quantum dots
P. Coleman, C. Hooley, Y. Avishai +2
We consider a `quantum dot' in the Coulomb blockade regime, subject to an arbitrarily large source-drain voltage V. When V is small, quantum dots with odd electron occupation displ…