271 citations · 372 across the 6 of their papers we have counts for
6 papers
Continuous unitary transformations in two-level boson systems
S. Dusuel, J. Vidal, J. M. Arias +2
Two-level boson systems displaying a quantum phase transition from a spherical (symmetric) to a deformed (broken) phase are studied. A formalism to diagonalize Hamiltonians with $O…
Quantum wire networks with local Z2 symmetry
K. Kazymyrenko, S. Dusuel, B. Doucot
For a large class of networks made of connected loops, in the presence of an external magnetic field of half flux quantum per loop, we show the existence of a large local symmetry…
Finite-size scaling exponents in the interacting boson model
S. Dusuel, J. Vidal, J. M. Arias +2
We investigate the finite-size scaling exponents for the critical point at the shape phase transition from U(5) (spherical) to O(6) (deformed -unstable) dynamical symmetries of…
Finite-Size Scaling Exponents of the Lipkin-Meshkov-Glick Model
S. Dusuel, J. Vidal
We study the ground state properties of the critical Lipkin-Meshkov-Glick model. Using the Holstein-Primakoff boson representation, and the continuous unitary transformation techni…
Effects of non-magnetic impurities on spin-fluctuations induced superconductivity
S. Dusuel, D. Zanchi
We study the effects of non-magnetic impurities on the phase diagram of a system of interacting electrons with a flat Fermi surface. The one-loop Wilsonian renormalization group fl…
Interaction-induced Fermi surface deformations in quasi one-dimensional electronic systems
S. Dusuel, B. Doucot
We consider serious conceptual problems with the application of standard perturbation theory, in its zero temperature version, to the computation of the dressed Fermi surface for a…