101 citations · 899 across the 31 of their papers we have counts for
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Universal spectrum of isolated three-body resonances
Ludovic Pricoupenko
The exact wavefunction of an isolated three-body resonance at finite scattering length is obtained for two identical particles interacting with another one via a pairwise zero-rang…
General features and contact modeling of -body isolated resonances near threshold
Ludovic Pricoupenko
-body non efimovian bound or quasi-bound states for particles with short range interactions are considered in arbitrary dimensions. The different resonance regimes near the thre…
Universality of isolated -body resonances at large scattering length
Ludovic Pricoupenko
Non Efimovian -body resonances are investigated in the regime of a large two-body s wave scattering length. In view of a universal description of low-energy bound and quasi-boun…
Shallow Trimers of Two Identical Fermions and One Particle in Resonant Regimes
Pascal Naidon, Ludovic Pricoupenko, Christiane Schmickler
We consider two identical fermions interacting in the p-wave channel. Each fermion also interacts with another particle in the vicinity of an s-wave resonance. We find that in addi…
Width and shift of Fano-Feshbach resonances for van der Waals interactions
Pascal Naidon, Ludovic Pricoupenko
We revisit the basic properties of Fano-Feshbach resonances in two-body systems with van der Waals tail interactions, such as ultracold neutral atoms. Using a two-channel model and…
The three-body pseudo-potential for atoms confined in one dimension
Ludovic Pricoupenko
Following a strong analogy with two-dimensional physics, the three-body pseudo-potential in one dimension is derived. The Born approximation is then considered in the context of ul…
A Pure Confinement Induced Trimer in One-Dimensional Atomic Waveguides
Ludovic Pricoupenko
Shallow trimers composed of three bosonic atoms in one-dimensional harmonic waveguides are studied in the vicinity of a Feshbach resonance. It is shown that for arbitrarily large v…
Second-order virial expansion for an atomic gas in a harmonic waveguide
Tom Kristensen, Xavier Leyronas, Ludovic Pricoupenko
The virial expansion for cold two-component Fermi and Bose atomic gases is considered in the presence of a waveguide and in the vicinity of a Feshbach resonance. The interaction be…
One-dimensional ultracold atomic gases: Impact of the effective range on integrability
Tom Kristensen, Ludovic Pricoupenko
Three identical bosons or fermions are considered in the limit of zero-range interactions and finite effective range. By using a two channel model, we show that these systems are n…
Ultracold-atom collisions in atomic waveguides : A two-channel analysis
Tom Kristensen, Ludovic Pricoupenko
Low dimensional behavior of two ultra-cold atoms trapped in two-and one-dimensional waveguides is investigated in the vicinity of a magnetic Feshbach resonance. A quantitative two-…
Ultracold bosons in the vicinity of a narrow resonance: shallow dimer and recombination
Ludovic Pricoupenko, Mattia Jona Lasinio
The different resonant regimes that can be achieved by using a magnetic Feshbach resonance are analyzed with a separable two-channel model. Emphasis is put on the case of narrow re…
Implicit ladder summation in the Hartree-Fock-Bogoliubov approach
Ludovic Pricoupenko
The fully variational Hartree Fock Bogoliubov approach for bosons is studied in the limit of zero range forces in two- and three-dimensions. The equation of state obtained in two-d…
Integral equations for the four-body problem
Christophe Mora, Yvan Castin, Ludovic Pricoupenko
We consider the four-boson and 3+1 fermionic problems with a model Hamiltonian which encapsulates the mechanism of the Feshbach resonance involving the coherent coupling of two ato…
Isotropic contact forces in arbitrary representation: heterogeneous few-body problems and low dimensions
Ludovic Pricoupenko
The Bethe-Peierls asymptotic approach which models pairwise short-range forces by contact conditions is introduced in arbitrary representation for spatial dimensions less than or e…
Four-body Efimov effect
Yvan Castin, Christophe Mora, Ludovic Pricoupenko
We study three same spin state fermions of mass M interacting with a distinguishable particle of mass m in the unitary limit where the interaction has a zero range and an infinite…
Crossover in the Efimov spectrum
Ludovic Pricoupenko
A filtering method is introduced for solving the zero-range three-boson problem. This scheme permits to solve the original Skorniakov Ter-Martirosian integral equation for an arbit…