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Low energy damping of collective modes in spinor Bose-Fermi mixtures

J. H. Pixley, Xiaopeng Li

Bulletin of the American Physical SocietyJun 11, 20150 citations

Landau-Zener tunneling of Bose-Fermi mixture in double-well

Heng Zhang, Wen‐Shan Duan, Wen-Yuan Wang +1 more

The European Physical Journal BSep 1, 20130 citations

Shear viscosity of quasi-2D dipolar Bose-Fermi mixtures with long-range 1/r interactions

Elnaz Darsheshdar, H. Yavari, Seyed Mostafa Moniri

The European Physical Journal PlusMay 1, 20165 citations

Landau damping in dilute Bose gases

Лев П. Питаевский, S. Stringari

arXiv:cond-mat/9708104Physics Letters ANov 1, 1997163 citations

Landau damping in a dipolar Bose–Fermi mixture in the Bose–Einstein condensation (BEC) limit

Seyed Mostafa Moniri, H. Yavari, Elnaz Darsheshdar

By using a mean-field approximation which describes the coupled oscillations of condensate and noncondensate atoms in the collisionless regime, Landau damping in a dilute dipolar Bose–Fermi mixture in the BEC limit where Fermi superfluid is treated as tightly bounded molecules, is investigated. In the case of a uniform quasi-two-dimensional (2D) case, the results for the Landau damping due to the Bose–Fermi interaction are obtained at low and high temperatures. It is shown that at low temperatures, the Landau damping rate is exponentially suppressed. By increasing the strength of dipolar interaction, and the energy of boson quasiparticles, Landau damping is suppressed over a broader temperature range.By using a mean-field approximation which describes the coupled oscillations of condensate and noncondensate atoms in the collisionless regime, Landau damping in a dilute dipolar Bose–Fermi mixture in the BEC limit where Fermi superfluid is treated as tightly bounded molecules, is investigated. In the case of a uniform quasi-two-dimensional (2D) case, the results for the Landau damping due to the Bose–Fermi interaction are obtained at low and high temperatures. It is shown that at low temperatures, the Landau damping rate is exponentially suppressed. By increasing the strength of dipolar interaction, and the energy of boson quasiparticles, Landau damping is suppressed over a broader temperature range.

Chinese Physics BNov 29, 20163 citations

Mediated interactions and damping effects in superfluid mixtures of Bose and Fermi gases

Dong-Chen Zheng, Yu-Xin Liao, Wen Lin +1 more

We investigate the homogeneous superfluid mixtures of a Bardeen-Cooper-Schrieffer (BCS) superfluid originating from pairing two-species fermionic atoms and superfluidity stemming from condensation of bosonic atoms. By integrating out the freedoms associated with the BCS superfluid, we derive the fermion-mediated interactions between bosons, which is attractive and can be tuned from long range in the BCS region to short range in the region of Bose-Einstein condensation of molecular dimers. By analyzing the Bogoliubov spectrum and the damping rate of bosonic superfluid, we map out the phase diagram spanned by the boson-fermion mass ratio and the boson-fermion coupling strength, which consists of a phase separation region and two phase-mixing regions with and without Landau damping. The three different phases can coexist at a tricritical point, which moves toward a low boson-fermion mass ratio and a high boson-fermion scattering length as the fermion-fermion interaction strength is tuned up on the BCS side.We investigate the homogeneous superfluid mixtures of a Bardeen-Cooper-Schrieffer (BCS) superfluid originating from pairing two-species fermionic atoms and superfluidity stemming from condensation of bosonic atoms. By integrating out the freedoms associated with the BCS superfluid, we derive the fermion-mediated interactions between bosons, which is attractive and can be tuned from long range in the BCS region to short range in the region of Bose-Einstein condensation of molecular dimers. By analyzing the Bogoliubov spectrum and the damping rate of bosonic superfluid, we map out the phase diagram spanned by the boson-fermion mass ratio and the boson-fermion coupling strength, which consists of a phase separation region and two phase-mixing regions with and without Landau damping. The three different phases can coexist at a tricritical point, which moves toward a low boson-fermion mass ratio and a high boson-fermion scattering length as the fermion-fermion interaction strength is tuned up on the BCS side.

arXiv:2503.00471Physical Review AFeb 26, 20243 citations

Effect of long-range 1/r interactions on the Landau damping in a Bose-Fermi mixture

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