Pairing Superfluid-Insulator Transition Induced by Atom-Molecule Conversion in Bosonic Mixtures in Optical Lattice

被引：1

作者：

Deng, Haiming ^{[1
]}

Tan, Zhi ^{[2
]}

Kong, Chao ^{[1
]}

Ye, Fuqiu ^{[3
]}

Zhong, Honghua ^{[2
]}

机构：

[1] Xiangnan Univ, Sch Phys & Elect Elect Engn, Chenzhou 423000, Peoples R China

[2] Cent South Univ Forestry & Technol, Inst Math & Phys, Changsha 410004, Peoples R China

[3] Jishou Univ, Dept Phys, Jishou 416000, Peoples R China

来源：

SYMMETRY-BASEL | 2023年 / 15卷 / 09期

关键词：

bosonic mixtures; optical lattice; pair-superfluid; FESHBACH RESONANCES; ULTRACOLD; ENTANGLEMENT;

D O I：

10.3390/sym15091715

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Motivated by the recent experiment on bosonic mixtures of atoms and molecules, we investigate pairing superfluid-insulator (SI) transition for bosonic mixtures of atoms and molecules in a one-dimensional optical lattice, which is described by an extended Bose-Hubbard model with atom-molecule conservation (AMC). It is found that AMC can induce an extra pair-superfluid phase though the system does not demonstrate pair-hopping. In particular, the system may undergo several pairing SI or insulator-superfluid transitions as the detuning from the Feshbach resonance is varied from negative to positive, and the larger positive detuning can bifurcate the pair-superfluid phases into mixed superfluid phases consisting of single-atomic and pair-atomic superfluid. The calculation of the second-order Renyi entropy reveals that the discontinuity in its first-order derivative corresponds to the phase boundary of the pairing SI transition. This means that the residual entanglement in our mean-field treatment can be used to efficiently capture the signature of the pairing SI transition induced by AMC.

引用

页数：12