63 citations · 131 across the 12 of their papers we have counts for
12 papers
Sound attenuation and velocity shift in antiferromagnetic spin-1/2 chains
Edmond Orignac, Emeric Caprani, Roberta Citro
We investigate ultrasound attenuation and sound velocity shift in antiferromagnetic spin-1/2 XXZ chains in magnetic field. We relate the sound velocity shift to derivatives of the…
Hall effect in multi-leg bosonic ladders
Edmond Orignac, Roberta Citro, Thierry Giamarchi
We use bosonization to analyze the ground state Hall response of interacting bosonic N-leg ladders threaded by a flux. We derive an explicit expression of the Hall imbalance in a p…
Critical Berezinskii-Kosterlitz-Thouless dynamics in the archetypal two-dimensional spin system BaCuSiOCl
K. M. Ranjith, Maxime Dupont, Steffen Krämer +6
We study the spin dynamics in the quasi-2D spin- dimer compound BaCuSiOCl, which exhibits a magnetic field-induced Bose-Einstein condensate (BEC) of triplons.…
Superconductivity in the repulsive Hubbard model on different geometries induced by density-assisted hopping
Franco T. Lisandrini, Edmond Orignac, Roberta Citro +2
We study the effect of density-assisted hopping on different dimerized lattice geometries, such as bilayers and ladder structures. We show analytically that the density-assisted ho…
One dimensional Bose-Hubbard model with long range hopping
Edmond Orignac
Interacting one-dimensional bosons with long range hopping decaying as a power law with distance are considered with the renormalization group and the self-consistent…
Platforms for the realization and characterization of Tomonaga-Luttinger liquids
Isabelle Bouchoule, Roberta Citro, Tim Duty +5
The concept of a Tomonaga-Luttinger liquid (TLL) has been established as a fundamental theory for the understanding of one-dimensional quantum systems. Originally formulated as a r…
Emergent SU(3) symmetry in a four leg spin tube
Edmond Orignac
We consider an antiferromagnetic four leg spin-1/2 tube using abelian and non-abelian bosonization. We show that in the limit of weak interchain coupling, the most relevant interac…
Breathing mode of a quantum droplet in a quasi-one-dimensional dipolar Bose gas
Edmond Orignac, Stefania De Palo, Luca Salasnich +1
We investigate the breathing mode and the stability of a quantum droplet in a tightly trapped one-dimensional dipolar gas of bosonic atoms. When the droplet with a flat-top density…
Competition of disorder and interchain hopping in a two-chain Hubbard model
E. Orignac, Y. Suzumura
We study the interplay of Anderson localization and interaction in a two chain Hubbard ladder allowing for arbitrary ratio of disorder strength to interchain coupling. We obtain th…
Competition of random and periodic potentials in interacting fermionic systems and classical equivalents: the Mott Glass
T. Giamarchi, P. Le Doussal, E. Orignac
We study the competition between a random potential and a commensurate potential on interacting fermionic and bosonic systems using a variety of methods. We focus on one dimensiona…
Low energy dynamics of the one dimensional multichannel Kondo-Heisenberg Lattice
N. Andrei, E. Orignac
We determine exactly the fixed point Hamiltonian of the one dimensional multichannel Kondo-Heisenberg lattice model for any number of channels N>=2. An anomalous singlet with non t…
Effects of a weak disorder on two coupled Hubbard chains
E. Orignac, T. Giamarchi
We consider the effect of weak nonmagnetic disorder on two chains of interacting fermions (with and without spins) coupled by interchain hopping. For the spinless case, interchain…