Search Results - "LEYRONAS, X"

Few Versus Many-Body Physics of an Impurity Immersed in a Superfluid of Spin 1/2 Attractive Fermions by Pierce, M, Leyronas, X, Chevy, F

“…In this Letter we investigate the properties of an impurity immersed in a superfluid of strongly correlated spin 1/2 fermions and we calculate the…”
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Analytical theory of the dressed bound state in highly polarized Fermi gases by Combescot, R, Giraud, S, Leyronas, X

“…We present an analytical treatment of a single ↓-atom within a Fermi sea of ↑-atoms, when the interaction is strong enough to produce a bound state, dressed by…”
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Superfluid equation of state of dilute composite bosons by Leyronas, X, Combescot, R

“…We present an exact theory of the BEC-BCS crossover in the Bose-Einstein-condensate (BEC) regime, which treats explicitly dimers as made of two fermions. We…”
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Comment on: Collective excitations of a degenerate gas at the BEC-BCS crossover by COMBESCOT, R, LEYRONAS, X

“…Very recent experiments have studied for the first time collective excitations of an ultracold $^6$Li gas covering in particular the BEC-BCS crossover domain…”
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Equation of state and collective frequencies of a trapped fermi gas along the BEC-unitarity crossover by ASTRAKHARCHIK, G. E, COMBESCOT, R, LEYRONAS, X, STRINGARI, S

“…We show that the study of the collective oscillations in a harmonic trap provides a very sensitive test of the equation of state of a Fermi gas near a Feshbach…”
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Hydrodynamic modes in dense trapped ultracold gases by Combescot, R, Leyronas, X

“…We consider the hydrodynamic modes for dense trapped ultracold gases, where the interparticle distance is comparable to the scattering length. We show that the…”
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On the N-exciton normalization factor by COMBESCOT, M, LEYRONAS, X, TANGUY, C

“…The N-ground-state-exciton normalization factor, namely , with the exact ground state exciton creation operator, differs from N! because the excitons are not…”
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Axial collective excitations of a degenerate Fermi gas in the BEC to unitarity crossover by Combescot, R, Leyronas, X

“…We show that, with reasonable hypotheses leading to a simple modeling, a link can be obtained from experiments on the axial low-frequency collective modes…”
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Coupling between planes and chains in YBa2Cu3O7: A possible solution for the order parameter controversy by Combescot, R, Leyronas, X

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Particle distribution tail and related energy formula by Combescot, R., Alzetto, F., Leyronas, X.

“…We present a simple derivation of the energy formula found by Tan, relative to the single-channel Hamiltonian relevant for ultracold Fermi gases. This…”
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Quantum wells, wires and dots with finite barrier: analytical expressions for the bound states by Leyronas, X., Combescot, M.

“…From a careful study of the transcendental equations fulfilled by the bound state energies of a free particle in a quantum well, cylindrical wire or spherical…”
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Instability of a trapped ultracold Fermi gas with attractive interactions: quantum effects by LEYRONAS, X, COMBESCOT, R

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Scaling at the chaos threshold for interacting electrons in a quantum Dot by Leyronas, X, Silvestrov, PG, Beenakker, CW

“…The chaotic mixing by random two-body interactions of many-electron Fock states in a confined geometry is investigated. Two regimes are distinguished in the…”
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Exact diagrammatic approach for dimer-dimer scattering and bound states of three and four resonantly interacting particles by Brodsky, I. V., Kagan, M. Yu, Klaptsov, A. V., Combescot, R., Leyronas, X.

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A simple theory for high Δ/Tc ratio in d-wave superconductors by COMBESCOT, R, LEYRONAS, X

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Virial expansion with Feynman diagrams by Leyronas, X.

“…We present a field theoretic method for the calculation of the second and third virial coefficients b{sub 2} and b{sub 3} of two-species fermions interacting…”
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Self-consistent theory for molecular instabilities in a normal degenerate Fermi gas in the BEC-BCS crossover by Combescot, R., Leyronas, X., Kagan, M. Yu

“…We investigate within a self-consistent theory the molecular instabilities arising in the normal state of a homogeneous degenerate Fermi gas, covering the…”
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Condensation energy of a spin-1/2 strongly interacting Fermi gas by Navon, N., Nascimbène, S., Leyronas, X., Chevy, F., Salomon, C.

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London penetration depth of strongly coupled isotropic superconductors: Low-temperature behavior by Leyronas, X, Combescot, R

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Equation of state of a polarized Fermi gas in the Bose-Einstein-condensate limit by Alzetto, F., Leyronas, X.

“…We present a theoretical study of the BEC-BCS crossover in the Bose-Einstein-condensate (BEC) regime in the case of an unequal number of fermions of two…”
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