42 citations · 82 across the 6 of their papers we have counts for
5 papers
Functional Renormalization Group for fermions on a one dimensional lattice at arbitrary filling
Lucas Désoppi, Nicolas Dupuis, Claude Bourbonnais
A formalism based on the fermionic functional-renormalization-group approach to interacting electron models defined on a lattice is presented. One-loop flow equations for the coupl…
Infrared behavior of interacting bosons at zero temperature
N. Dupuis, A. Rancon
We review the infrared behavior of interacting bosons at zero temperature. After a brief discussion of the Bogoliubov approximation and the breakdown of perturbation theory due to…
Infrared behavior of interacting bosons at zero temperature
N. Dupuis
We review the infrared behavior of interacting bosons at zero temperature. After a brief discussion of the Bogoliubov approximation and the breakdown of perturbation theory due to…
Non-perturbative renormalization-group approach to lattice models
N. Dupuis, K. Sengupta
The non-perturbative renormalization-group approach is extended to lattice models, considering as an example a theory defined on a -dimensional hypercubic lattice. Within…
Non-perturbative renormalization-group approach to zero-temperature Bose systems
N. Dupuis, K. Sengupta
We use a non-perturbative renormalization-group technique to study interacting bosons at zero temperature. Our approach reveals the instability of the Bogoliubov fixed point when $…