Competition between the symmetry breaking and onset of collapse in weakly coupled atomic condensates
Competition between the symmetry breaking and onset of collapse in weakly coupled atomic condensates
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DOI：
10.1103/physreva.81.045603
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发表时间：
2010-03
影响因子：
2.9
通讯作者：
L. Salasnich;B. Malomed;F. Toigo
中科院分区：
文献类型：
--
作者：
L. Salasnich;B. Malomed;F. Toigo
本文分析了原子隧穿耦合雪茄形阱中物质波孤子对称性破缺。该模型是基于一个系统的线性耦合非多项式薛定谔方程。与著名的自发对称破缺（SSB）分岔耦合三次方程，在本模型中的SSB竞争的崩溃在这个系统中的发病。在系统的参数空间中，确定了对称和非对称孤子的稳定区域以及崩溃区域。
We analyze the symmetry breaking of matter-wave solitons in a pair of cigar-shaped traps coupled by tunneling of atoms. The model is based on a system of linearly coupled nonpolynomial Schroedinger equations. Unlike the well-known spontaneous-symmetry-breaking (SSB) bifurcation in coupled cubic equations, in the present model the SSB competes with the onset of collapse in this system. Stability regions of symmetric and asymmetric solitons, as well as the collapse region, are identified in the system's parameter space.