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We discuss the multispecies time-dependent restricted-active-space self-consistent-field theory, an \textit{ab initio} wavefunction-based theory for mixtures of ultracold atomic and molecular gases. We present the general theory, based on…

量子物理 · 物理学 2018-08-01 Camille Lévêque , Lars Bojer Madsen

We investigate trapped resonant fermions with unequal populations within the local density approximation above the superfluid transition temperature. By tuning the attractive interaction between fermions via Feshbach resonance, the system…

超导电性 · 物理学 2007-05-23 Chi-Ho Cheng , Sung-Kit Yip

We consider a system of one-dimensional non-interacting fermions in external harmonic confinement. Using an efficient Green's function method we evaluate the exact profiles and the pair correlation function, showing a direct signature of…

统计力学 · 物理学 2009-11-07 Patrizia Vignolo , Anna Minguzzi

A sum rule approach is used to calculate the zero temperature oscillation frequencies of a two component trapped atomic Fermi gas in the BCS-Bose Einstein condensation crossover region. These sum rules are evaluated using a local density…

其他凝聚态物理 · 物理学 2007-05-23 Theja N. De Silva , Erich J. Mueller

It is shown that a Bose-Fermi mixture of a degenerate gas of spin-polarized fermions, whose number significantly exceeds the number of bosons, embedded in a strongly anisotropic trap, is described by the one-dimensional coupled nonlinear…

其他凝聚态物理 · 物理学 2009-11-11 J. Santhanam , V. M. Kenkre , V. V. Konotop

We present a summary of some recent theoretical results for matter-wave patterns in Fermi and Bose-Fermi degenerate gases, obtained in the framework of the quasi-mean-field approximation. We perform a dimensional reduction from the…

量子气体 · 物理学 2019-02-08 Pablo Díaz , David Laroze , Boris A. Malomed

We reveal a quantum coherent state characterized by composite bosonic trions, wherein paired fermions further bind with bosons, in one-dimensional Bose-Fermi mixtures.This phase emerges in two separate models, both featuring onsite…

量子气体 · 物理学 2025-07-04 Qi Song , Jie Lou , Yan Chen

We examine the density profiles of the quantum degenerate Bose-Fermi mixture of $^{174}$Yb-$^{173}$Yb, experimental observed recently, in the mean field regime. In this mixture there is a possibility of tuning the Bose-Bose and Bose-Fermi…

量子气体 · 物理学 2011-02-21 S. Gautam , P. Muruganandam , D. Angom

We study a mixture of fermionic and bosonic cold atoms on a two-dimensional optical lattice, where the fermions are prepared in two hyperfine (isospin) states and the bosons have Bose-Einstein condensed (BEC). The coupling between the…

超导电性 · 物理学 2007-10-30 F. D. Klironomos , S. -W. Tsai

We investigate many-body effects on a mixture of interacting bosons and fermions loaded in an optical lattice using a generalized dynamical mean field theory combined with the numerical renormalization group. We show that strong correlation…

量子气体 · 物理学 2015-06-05 Kazuto Noda , Robert Peters , Norio Kawakami , Thomas Pruschke

We unravel the correlated non-equilibrium dynamics of a mass balanced Bose-Fermi mixture in a one-dimensional optical lattice upon quenching an imposed harmonic trap from strong to weak confinement. Regarding the system's ground state, the…

量子物理 · 物理学 2018-06-06 P. Siegl , S. I. Mistakidis , P. Schmelcher

In this letter we study the interaction energy in a mixture of Bose and Fermi superfluids realized in recent cold atom experiment. On the Bose-Einstein-condensate (BEC) side of a Feshbach resonance between fermionic atoms, this interaction…

量子气体 · 物理学 2014-12-24 Ren Zhang , Wei Zhang , Hui Zhai , Peng Zhang

We consider a time-dependent non-linear Schr\"odinger equation in one dimension (1D) with a fifth-order interaction term and external harmonic confinement, as a model for both (i) a Bose gas with hard-core contact interactions in…

凝聚态物理 · 物理学 2009-11-07 A. Minguzzi , P. Vignolo , M. L. Chiofalo , M. P. Tosi

We establish a conceptual framework for the identification and the characterization of induced interactions in binary mixtures and reveal their intricate relation to entanglement between the components or species of the mixture. Exploiting…

量子物理 · 物理学 2018-08-01 J. Chen , J. M. Schurer , P. Schmelcher

Derivation of effective zero-range one-dimensional (1D) interactions between atoms in tight waveguides is reviewed, as is the Fermi-Bose mapping method for determination of exact and strongly-correlated states of ultracold bosonic and…

软凝聚态物质 · 物理学 2009-11-10 M. D. Girardeau , Hieu Nguyen , M. Olshanii

By analyzing breathing mode of a Bose-Einstein condensate repulsively interacting with a polarized fermionic cloud, we further the understanding of a Bose-Fermi mixture recently realized by Lous et al. [\textit{Phys. Rev. Lett.}…

量子气体 · 物理学 2020-09-04 Piotr T. Grochowski , Tomasz Karpiuk , Mirosław Brewczyk , Kazimierz Rzążewski

We study the Bose-Fermi mixture with infinitely boson-boson repulsion and finite boson-Fermion repulsion. By using a generalized Jordan-Wigner transformation, we show that the system can be mapped to a repulsive Hubbard model and thus can…

量子气体 · 物理学 2010-11-24 Shu Chen , Junpeng Cao , Shi-Jian Gu

Dynamics of strongly interacting Fermi gases, consisting of a 50-50 mixture of two different fermionic species, is investigated. For the equation of state we consider a Pad\'{e} [2/2] approximations, which gives the weak-coupling…

其他凝聚态物理 · 物理学 2007-05-23 Yeong E. Kim , Alexander L. Zubarev

We present a semiclassical three-fluid model for a Bose-condensed mixture of interacting Bose and Fermi gases confined in harmonic traps at finite temperature. The model is used to characterize the experimentally relevant behaviour of the…

凝聚态物理 · 物理学 2016-08-31 M. Amoruso , A. Minguzzi , S. Stringari , M. P. Tosi , L. Vichi

The frequencies of the collective oscillations of a harmonically trapped Fermi gas interacting with large scattering lengths are calculated at zero temperature using hydrodynamic theory. Different regimes are considered, including the…

凝聚态物理 · 物理学 2009-11-10 Sandro Stringari