Zobrazeno 1 - 10
of 116
pro vyhledávání: '"ORSO, G. A."'
In this article we discuss the accuracy of effective one-dimensional theories used to describe the behavior of ultracold atomic ensembles confined in quantum wires by a harmonic trap. We derive within a fully many-body approach the effective Hamilton
Externí odkaz:
http://arxiv.org/abs/2211.01013
Publikováno v:
Phys. Rev. A 103, 063314 (2021)
The ground-state properties of two-component repulsive Fermi gases in two dimensions are investigated by means of fixed-node diffusion Monte Carlo simulations. The energy per particle is determined as a function of the intercomponent interaction stre
Externí odkaz:
http://arxiv.org/abs/2103.13251
Akademický článek
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Publikováno v:
Phys. Rev. A 91, 043623 (2015)
Using the time-dependent density matrix renormalization group method and exact diagonalization, we study the non-equilibrium dynamics of the one-dimensional Fermi-Hubbard model following a quantum quench or a ramp of the onsite interaction strength.
Externí odkaz:
http://arxiv.org/abs/1412.0507
Publikováno v:
Phys. Rev. Lett. 109, 110602 (2012)
We study the sudden expansion of spin-imbalanced ultracold lattice fermions with attractive interactions in one dimension after turning off the longitudinal confining potential. We show that the momentum distribution functions of majority and minorit
Externí odkaz:
http://arxiv.org/abs/1206.2019
Publikováno v:
Phys. Rev. A. 81, 053602 (2010)
We calculate the density profiles of a trapped spin-imbalanced Fermi gas with attractive interactions in a one-dimensional optical lattice, using both the local density approximation (LDA) and density matrix renormalization group (DMRG) simulations.
Externí odkaz:
http://arxiv.org/abs/1001.4720
Publikováno v:
Phys. Rev. A 80, 033625 (2009)
We compute the absorption spectrum of strongly repulsive one-dimensional bosons in a disordered or quasi-periodic optical lattice. At commensurate filling, the particle-hole resonances of the Mott insulator are broadened as the disorder strength is i
Externí odkaz:
http://arxiv.org/abs/0907.3663
Autor:
Orso, G.
We investigate the ground state properties of a disordered superfluid Fermi gas across the BCS-BEC (Bose Einstein condensate) crossover. We show that, for weak disorder, both the depletion of the condensate fraction of pairs and the normal fluid dens
Externí odkaz:
http://arxiv.org/abs/0709.2621
Interacting Fermi gases with equal populations but unequal masses are investigated at zero temperature using local density approximation and the hydrodynamic theory of superfluids in the presence of harmonic trapping. We derive the conditions of ener
Externí odkaz:
http://arxiv.org/abs/0709.1690
Autor:
Orso, G.
Publikováno v:
Physical Review Letters 98, 070402 (2007)
We investigate two-component attractive Fermi gases with imbalanced spin populations in trapped one dimensional configurations. The ground state properties are determined within local density approximation, starting from the exact Bethe-ansatz equati
Externí odkaz:
http://arxiv.org/abs/cond-mat/0610437