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We study the transition to fermion pair superfluidity in a mixture of interacting bosonic and fermionic atoms. The fermion interaction induced by the bosons and the dynamical screening of the condensate phonons due to fermions are included…

其他凝聚态物理 · 物理学 2009-11-13 Tilman Enss , Wilhelm Zwerger

We study a mixture of one-dimensional bosons and spinless fermions at incommensurate filling using phenomenological bosonization and Green's functions techniques. We derive the relation between the parameters of the microscopic Hamiltonian…

量子气体 · 物理学 2010-05-31 E. Orignac , M. Tsuchiizu , Y. Suzumura

The coexistence of the universal transverse force and the non-universal friction force on a topological singularity in a superfluid is shown here. Based on the BCS type microscopic theory, we explicitly evaluate the quasiparticle…

凝聚态物理 · 物理学 2007-05-23 X. -M. Zhu , P. Ao

We investigate many-body phase diagrams of atomic boson-fermion mixtures loaded in the two-dimensional optical lattice. Bosons mediate an attractive, finite-range interaction between fermions, leading to fermion pairing phases of different…

超导电性 · 物理学 2007-05-23 D. -W. Wang , M. D. Lukin , E. Demler

The application of the nonperturbative renormalisation group approach to a system with two fermion species is studied. Assuming a simple ansatz for the effective action with effective bosons, describing pairing effects we derive a set of…

核理论 · 物理学 2016-09-08 Boris Krippa

Pairing between fermions that attract each other, reveal itself to the macroscopic world in the form of superfluidity. Since the discovery of fermionic superfluidity, intense search has been going on to find various unconventional forms of…

量子气体 · 物理学 2009-06-12 O. Dutta , M. Lewenstein

We compute the dynamical friction on a small perturber moving through an inviscid fluid, i.e., a superfluid. Crucially, we account for the tachyonic gravitational mass for sound waves, reminiscent of the Jeans instability of the fluid,…

高能物理 - 唯象学 · 物理学 2019-11-06 Lasha Berezhiani , Benjamin Elder , Justin Khoury

We examine the effect of boson-fermion interaction in a one-dimensional Bose-Fermi mixture by using the density matrix renormalization group method. We show that the boson superfluidity is enhanced by fermions for a weak boson-fermion…

量子气体 · 物理学 2021-02-16 Chenrong Liu , Yongzheng Wu , Jie Lou , Yan Chen

We report on the production of a stable mixture of bosonic and fermionic superfluids composed of the elements $^{174}$Yb and $^6$Li which feature a strong mismatch in mass and distinct electronic properties. We demonstrate elastic coupling…

量子气体 · 物理学 2017-02-08 Richard Roy , Alaina Green , Ryan Bowler , Subhadeep Gupta

We report on the observation of the Josephson effect between two strongly interacting fermionic superfluids coupled through a thin tunneling barrier. We prove that the relative population and phase are canonically conjugate dynamical…

We investigate the homogeneous superfluid mixtures of Bardeen-Cooper-Schrieffer~(BCS) superfluid originating from pairing two-species fermionic atoms and superfluidity stemming from condensation of bosonic atoms. By integrating out the…

量子气体 · 物理学 2025-03-04 Dong-Chen Zheng , Yu-Xin Liao , Wen Lin , Renyuan Liao

We study the instability of a mixture of two interacting counter-flowing superfluids. For a homogeneous system, we show that superfluid hydrodynamics leads to the existence of a dynamical instability at a critical value of the relative…

量子气体 · 物理学 2015-06-11 M. Abad , A. Recati , S. Stringari , F. Chevy

Correlations between a composite boson and a fermion pair are considered in the context of the crossover theory of fermionic to bosonic superfluidity. It is shown that such correlations are the minimal ingredients needed in a many-body…

软凝聚态物质 · 物理学 2007-05-23 M. J. Holland , C. Menotti , L. Viverit

We study the dynamics of counterflowing bosonic and fermionic lithium atoms. First, by tuning the interaction strength we measure the critical velocity vc of the system in the BEC-BCS crossover in the low temperature regime and we compare…

We consider a homogeneous mixture of bosons and polarized fermions. We find that long-range and attractive fermion-mediated interactions between bosons have dramatic effects on the properties of the bosons. We construct the phase diagram…

量子气体 · 物理学 2021-02-10 Dong-Chen Zheng , Lin Wen , Chun-Rong Ye , Renyuan Liao

We argue that the strongly coupled quark-gluon plasma formed at LHC and RHIC can be considered as a chiral superfluid. The "normal" component of the fluid is the thermalized matter in common sense, while the "superfluid" part consists of…

高能物理 - 唯象学 · 物理学 2013-02-27 T. Kalaydzhyan

We obtain the explicit expression of the friction on a moving quantized vortex, following the formulation of Thouless, Ao and Niu. It is shown that the friction on a moving vortex is sensitive to details but does not change the transverse…

凝聚态物理 · 物理学 2015-06-25 X. -M. Zhu , P. Ao

We study a mixture of strongly interacting bosons and spinless fermions with on-site repulsion in a three-dimensional optical lattice. For this purpose we develop and apply a generalized DMFT scheme, which is exact in infinite dimensions…

其他凝聚态物理 · 物理学 2008-03-10 I. Titvinidze , M. Snoek , W. Hofstetter

We describe the collapse of the bosonic component in a boson-fermion mixture due to the pressure exerted on them by a large fermionic component, leading to collapse in a system with all-repulsive interactions. We describe the phenomena…

斑图形成与孤子 · 物理学 2008-02-06 Vladyslav I. Prytula , Vladimir V. Konotop , Victor M. Perez-Garcia , Vadym E. Vekslerchik

We examine two dimensional mixture of single-component fermions and dipolar bosons. We calculate the self-enregies of the fermions in the normal state and the Cooper pair channel by including first order vertex correction to derive a…

量子气体 · 物理学 2015-05-18 O. Dutta , M. Lewenstein
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