Interplay between Binary and Three-Body Interactions and Enhancement of Stability in Trapless Dipolar Bose-Einstein Condensates

被引：4

作者：

Subramaniyan, Sabari ^{[1
]}

Ramavarmaraja, Kishor Kumar ^{[2
]}

Ramaswamy, Radha ^{[1
]}

Malomed, Boris A. ^{[3
,4
]}

机构：

[1] Govt Coll Women A, Dept Phys, Ctr Nonlinear Sci, Kumbakonam 612001, India

[2] Univ Otago, Dept Phys, Ctr Quantum Sci, Dodd Walls Ctr Photon & Quantum Technol, Dunedin 9054, New Zealand

[3] Tel Aviv Univ, Ctr Light Matter Interact, Dept Phys Elect, Sch Elect Engn,Fac Engn, POB 39040, Tel Aviv, Israel

[4] Univ Tarapaca, Inst Alta Invest, Casilla 7D, Arica 1000000, Chile

来源：

APPLIED SCIENCES-BASEL | 2022年 / 12卷 / 03期

基金：

以色列科学基金会;

关键词：

Bose-Einstein condensates; Gross-Pitaevskii equation; dipole-dipole interaction; variational method; Runge-Kutta method; Crank-Nicolson method; GROSS-PITAEVSKII EQUATION; SOLITONS; STABILIZATION;

D O I：

10.3390/app12031135

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We investigate the nonlocal Gross-Pitaevskii (GP) equation with long-range dipole-dipole and contact interactions (including binary and three-body collisions). We address the impact of the three-body interaction on stabilizing trapless dipolar Bose-Einstein condensates (BECs). It is found that the dipolar BECs exhibit stability not only for the usual combination of attractive binary and repulsive three-body interactions, but also for the case when these terms have opposite signs. The trapless stability of the dipolar BECs may be further enhanced by time-periodic modulation of the three-body interaction imposed by means of Feshbach resonance. The results are produced analytically using the variational approach and confirmed by numerical simulations.

引用

页数：14

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