56 citations · 56 across the 1 of their papers we have counts for
7 papers · 1 filter
Multi-scale fluctuations near a Kondo Breakdown Quantum Critical Point
I. Paul, C. Pepin, M. R. Norman
We study the Kondo-Heisenberg model using a fermionic representation for the localized spins. The mean-field phase diagram exhibits a zero temperature quantum critical point separa…
Interaction Correction of Conductivity Near a Ferromagnetic Quantum Critical Point
I. Paul
We calculate the temperature dependence of conductivity due to interaction correction for a disordered itinerant electron system close to a ferromagnetic quantum critical point whi…
Sum Rules and Ward Identities in the Kondo Lattice
P. Coleman, I. Paul, J. Rech
We derive a generalized Luttinger-Ward expression for the Free energy of a many body system involving a constrained Hilbert space. In the large limit, we are able to explicity…
Quantum Correction to Conductivity Close to Ferromagnetic Quantum Critical Point in Two Dimensions
I. Paul, C. Pépin, B. N. Narozhny +1
We study the temperature dependence of the conductivity due to quantum interference processes for a two-dimensional disordered itinerant electron system close to a ferromagnetic qu…
Construction of Localized Basis for Dynamical Mean Field Theory
I. Paul, G. Kotliar
Many-body Hamiltonians obtained from first principles generally include all possible non-local interactions. But in dynamical mean field theory the non-local interactions are ignor…
Quantum replica approach to the under-screened Kondo model
P. Coleman, I. Paul
We extend the Schwinger boson large N treatment of the underscreened Kondo model in a way that correctly captures the finite elastic phase shift in the singular Fermi liquid. The n…